117 results on '"Yongsong Cao"'
Search Results
2. Amphiphilic Cationic Carbon Dots for Efficient Delivery of Light‐Dependent Herbicide
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Gang Tang, Jialu Wang, Jianhua Xiao, Yulu Liu, Yuqi Huang, Zhiyuan Zhou, Xiaohong Zhang, Gaohua Hu, Weiyao Yan, and Yongsong Cao
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activity ,carbon dots ,herbicide ,light conversion ,protoporphyrinogen oxidase ,Science - Abstract
Abstract The inefficient delivery of herbicides causes unpleasant side effects on the ecological environment. Protoporphyrinogen oxidase (PPO)‐inhibiting herbicides rely on the presence of external light to exert the activities and thus their performance in the field is extremely susceptible to the light environment. Here, taking acifluorfen (ACI) as a model PPO‐inhibiting herbicide to enhance efficacy by boosting the utilization rate of sunlight, amphiphilic cationic CDs (CPC‐CDs) from cetylpyridinium chloride (CPC) as a precursor, is first prepared as a supplementary light source generator, and subsequently co‐assembled with ACI through non‐covalent bond interactions to obtain the stable fluorescent nanoparticles (ACI@CPC‐CDs). ACI@CPC‐CDs with fascinating physicochemical properties can penetrate the leaves of weeds through the stomata and undergo a long‐distance transport in the cell intervals. Under low light intensity, CPC‐CDs can be applied as the internal light source to promote the formation of more singlet oxygen to damage the leaf cell membrane, consequently improving the herbicidal activity of ACI. Moreover, the safety evaluation of ACI@CPC‐CDs demonstrates no risk to non‐target organisms and the environment. Therefore, this work offers a promising strategy for the efficient delivery of light‐dependent PPO‐inhibiting herbicides and opens new insights into the application of CDs in the development of sustainable agriculture.
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- 2024
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3. Correction: Making the Complicated Simple: A Minimizing Carrier Strategy on Innovative Nanopesticides
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Wenjie Shangguan, Qiliang Huang, Huiping Chen, Yingying Zheng, Pengyue Zhao, Chong Cao, Manli Yu, Yongsong Cao, and Lidong Cao
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Technology - Published
- 2024
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4. Preparation of novel auxinic herbicide derivatives with high-activity and low-volatility by me-too method
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Guanglong Ding, Dong Guo, Wenbing Zhang, Ping Han, Darunee Punyapitak, Mingcheng Guo, Zhaopeng Zhang, Baitao Wang, Jianqiang Li, and Yongsong Cao
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Chemistry ,QD1-999 - Abstract
New auxinic herbicide derivatives with high-activity and low-volatility are required urgently to solve the growing problems of weed resistance and volatile drifting which severely limit the application of auxinic herbicides (2,4-D, MCPA and dicamba). In this study, a series of auxinic herbicide derivatives were prepared using 2,4-D, MCPA and dicamba as lead compounds by me-too method. The volatility, greenhouse herbicidal activity against four common weeds and field herbicidal activity were evaluated and a comparative analysis with the corresponding lead compound was made. Results of volatility test indicated that it was possible to get a low-volatile compound even when the reactants were both highly volatile and the compounds with intermolecular hydrogen bond showed the comparatively low volatility. In the greenhouse herbicidal activity test, the compounds with ester bond had faster and higher herbicidal activities and better inhibition phenotypes than the compounds with amide bond. The compounds (R)-ethyl 2-(4-(2-(2,4-dichlorophenoxy)acetoxy)phenoxy)propanoate (3a-9), (R)-ethyl 2-(4-(2-(4-chloro-2-methylphenoxy)acetoxy)phenoxy)propanoate (3a-18) and (R)-4-((1-ethoxy-1-oxopropan-2-yl)oxy)phenyl 3,6-dichloro-2-methoxybenzoate (3b-7) showed lower volatilities and faster and higher activities in the greenhouse and field test than the corresponding lead compound and could be potential herbicides for further development. Keywords: Auxinic herbicide derivative, Herbicidal activity, Volatility, Me-too method
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- 2019
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5. Allyl Isothiocyanate (AITC) Triggered Toxicity and FsYvc1 (a STRPC Family Member) Responded Sense in Fusarium solani
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Yingbin Li, Yixiang Liu, Zhiping Zhang, Yongsong Cao, Jianqiang Li, and Laixin Luo
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allyl isothiocyanate ,filamentous fungi ,Fusarium solani ,FsYvc1 ,sensing ,Microbiology ,QR1-502 - Abstract
Allyl isothiocyanate (AITC) is a natural product used as a food additive. Due to its strong volatility and broad biological activity, AITC is considered as a bio-fumigant to control soil-borne fungal diseases in agriculture, creating an urgent need for evaluation of the antifungal activity of AITC. Here we study the effect of AITC on Fusarium solani growth and explore the molecular mechanisms. The results indicated that AITC causes rapid inhibition of F. solani after 5 min, hyphal deformity, and electrolyte leakage. A yeast-like vacuolar transient receptor potential channel regulator (FsYvc1, a STRPC family member) was identified in F. solani that seems to play a role in this fungi AITC sensitivity. Genetic evidence suggests the gene FsYvc1 is involved in F. solani growth, development, and pathogenicity. Loss of FsYvc1 resulted in hypersensitivity of F. solani to AITC and induced reactive oxygen species (ROS) accumulation ∼ 1.3 to 1.45- folds that of the wild type (WT), and no difference responses to CaCl2, NaCl, KCl, SDS, and Congo red when compared with WT. In addition, ΔFsYvc1-17 showed significantly reduced (∼ 1-fold) glutathione-S-transferase (GST) expression compared with the WT without AITC induction. Upon exposure to 4.8 μg/mL AITC for 3 h, the relative expression levels were ∼ 12–30 fold higher in both the WT and ΔFsYvc1-17. Nevertheless, no difference in GST expression level was observed between the WT and ΔFsYvc1-17. The current study provides novel insights into the toxicity mechanisms of AITC. Considering our results that show the key role of FsYvc1, we propose that it could act as a new molecular target for future fungicide development.
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- 2020
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6. Biofumigation on Post-Harvest Diseases of Fruits Using a New Volatile-Producing Fungus of Ceratocystis fimbriata.
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Qian Li, Lei Wu, Jianjun Hao, Laixin Luo, Yongsong Cao, and Jianqiang Li
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Medicine ,Science - Abstract
A variety of volatile organic compounds (VOCs) produced by Ceratocystis fimbriata have strong bioactivity against a wide range of fungi, bacteria and oomycetes. Mycelial growth, conidial production, and spore germination of fungi and oomycetes were significantly inhibited after exposure to cultures of C. fimbriata, and colony formation of bacteria was also inhibited. Two post-harvest diseases, peach brown rot caused by Monilinia fructicola and citrus green mold caused by Penicillium digitatum, were controlled during a 4-day storage by enclosing wound-inoculated fruits with 10 standard diameter Petri plate cultures of C. fimbriata in a 15 L box. The fruits were freshly inoculated at onset of storage and the cultures of C. fimbriata were 6 days old. Percentage of control was 92 and 97%, respectively. After exposure to C. fimbriata VOCs, severely misshapen hyphae and conidia of these two post-harvest pathogens were observed by scanning electron microscopy, and their pathogenicity was lost or greatly reduced.
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- 2015
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7. Stable Fluorescent Nanoparticles Based on Co-assembly of Acifluorfen and Poly(salicylic acid) for Enhancing Herbicidal Activity and Reducing Environmental Risks
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Huachen Wang, Gang Tang, Zhiyuan Zhou, Xi Chen, Yulu Liu, Guangyao Yan, Xiaohong Zhang, Xuan Li, Yuqi Huang, Jialu Wang, and Yongsong Cao
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General Materials Science - Published
- 2023
8. Self-Assembled Nanoparticles of a Prodrug Conjugate Based on Pyrimethanil for Efficient Plant Disease Management
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Yuyang Tian, Yuqi Huang, Xiaohong Zhang, Gang Tang, Yunhao Gao, Zhiyuan Zhou, Yan Li, Huachen Wang, Xueyang Yu, Xuan Li, Yulu Liu, Guangyao Yan, Jialu Wang, and Yongsong Cao
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Pyrimidines ,Anti-Infective Agents ,Solvents ,Butyric Acid ,Disease Management ,Nanoparticles ,Prodrugs ,General Chemistry ,Pesticides ,General Agricultural and Biological Sciences ,Amides - Abstract
Self-assembled nanotechnology is a promising strategy for improving the effective utilization of pesticides due to its distinct advantages. Herein, an amide-bonded prodrug conjugate based on pyrimethanil (PYR) and butyric acid (BA) was successfully synthesized by the nucleophilic substitution reaction and subsequently self-assembled into spherical nanoparticles (PB NPs) with an average size of 85 nm through the solvent exchange method without using any toxic adjuvant. The results showed that PB NPs based on PYR and BA had a synergistic antimicrobial activity against
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- 2022
9. A high adhesion co‐assembly based on myclobutanil and tannic acid for sustainable plant disease management
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Xuan Li, Zhiyuan Zhou, Yuqi Huang, Gang Tang, Yulu Liu, Xi Chen, Guangyao Yan, Huachen Wang, Xiaohong Zhang, Jialu Wang, and Yongsong Cao
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Insect Science ,General Medicine ,Agronomy and Crop Science - Published
- 2023
10. Carrier-Free Small Molecular Self-Assembly Based on Berberine and Curcumin Incorporated in Submicron Particles for Improving Antimicrobial Activity
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Yuyang Tian, Gang Tang, Yunhao Gao, Xi Chen, Zhiyuan Zhou, Yan Li, Xuan Li, Huachen Wang, Xueyang Yu, Laixin Luo, and Yongsong Cao
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Curcumin ,Anti-Infective Agents ,Berberine ,Drug Compounding ,General Materials Science ,Anti-Bacterial Agents - Abstract
Nanocarrier-based pesticide formulations have been severely restricted in agriculture practices due to their high-cost preparation process, poor loading capacity, and toxicity issues. To overcome these issues, carrier-free small molecular self-assembled submicron particles (SMPs) with an improved photoactivated antimicrobial activity based on two natural microbicides berberine hydrochloride (BBR) and curcumin (CM) are constructed by noncovalent interactions through a simple and fast preparation process (solvent exchange method) without using any adjuvant. The results show that the optimized molar ratio of BBR to CM is 2:1 at pH 5 and 25 °C in an aqueous solution for the formation of B-C SMPs. The obtained B-C SMPs exhibit excellent physicochemical properties, such as uniform morphology (407 nm), low polydispersity index (0.283), and strong ζ-potential (+24.4 mV). The antibacterial activities of B-C SMPs against
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- 2022
11. Preparation of Ionic Liquid Forms of <scp>l</scp>-Glufosinate for Improving the Physicochemical Property and Enhancing Efficacy
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Gang Tang, Yunhao Gao, Xi Chen, Zhiyuan Zhou, Yuyang Tian, Yan Li, and Yongsong Cao
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Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,Environmental Chemistry ,General Chemistry - Published
- 2021
12. Pectin functionalized metal-organic frameworks as dual-stimuli-responsive carriers to improve the pesticide targeting and reduce environmental risks
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You Liang, Sijin Wang, Huijuan Jia, Yijia Yao, Jiehui Song, Hongqiang Dong, Yongsong Cao, Feng Zhu, and Zhongyang Huo
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Colloid and Surface Chemistry ,Surfaces and Interfaces ,General Medicine ,Physical and Theoretical Chemistry ,Biotechnology - Abstract
Encapsulation of active ingredients into intelligent response controlled release carriers has been recognized as a promising approach to enhance the utilization efficiency and reduce the environmental risks of pesticides. In this work, an intelligent redox and pectinase dual stimuli-responsive pesticide delivery system was constructed by bonding pectin with metal-organic frameworks (FeMOF nanoparticles) which were loaded with pyraclostrobin (PYR@FeMOF-pectin nanoparticles). The successful fabrication of PYR@FeMOF-pectin nanoparticles was proved by a series of physicochemical characterizations. The results indicated that the loading capacity of PYR@FeMOF-pectin nanoparticles for pyraclostrobin was approximately 20.6%. The pectin covered on the surface of PYR@FeMOF nanoparticles could protect pyraclostrobin from photolysis and improve their spreadability on rice blades effectively. Different biological stimuli associated with Magnaporthe oryzae could trigger the release of pyraclostrobin from the pesticide-loaded core-shell nanoparticles, resulting in the death of pathogens. The bioactivity survey determined that PYR@FeMOF-pectin nanoparticles had a superior fungicidal activity and a longer duration against Magnaporthe oryzae than pyraclostrobin suspension concentrate. In addition, the FeMOF-pectin nanocarriers showed no obvious phytotoxicity and could enhance the shoot length and root length of rice plants. More importantly, PYR@FeMOF-pectin nanoparticles had an 8-fold reduction in acute toxicity to zebrafish than that of pyraclostrobin suspension concentrate. Therefore, the dual-responsive FeMOF-pectin nanocarriers have great potential for realizing site-specific pesticide delivery and promoting plant growth.
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- 2022
13. A simple preparation process for an efficient nano-formulation: small molecule self-assembly based on spinosad and sulfamic acid
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Yunhao Gao, Gang Tang, Yongsong Cao, Yuyang Tian, Zhiyuan Zhou, Jiale Yang, Xi Chen, Jingyue Tang, Yan Li, Yunpeng Zhang, Xiaolin Zhang, and Junfan Niu
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Green chemistry ,Aqueous solution ,Chemistry ,Spinosad ,Nanoparticle ,medicine.disease_cause ,Pollution ,Pesticide formulation ,chemistry.chemical_compound ,Chemical engineering ,medicine ,Sulfamic acid ,Environmental Chemistry ,Self-assembly ,Genotoxicity ,medicine.drug - Abstract
The abuse of toxic organic solvents and surfactants has caused immeasurable damage to human health and the environment. Therefore, based on the concept of green chemistry, developing a new type of nano-based pesticide formulation that does not contain harmful additives is urgent for sustainable pest management. Herein, we report two natural small molecular substances, spinosad (SSD) and sulfamic acid (SA), that were self-assembled into SSD-SA nanoparticles (SSD-SA NPs) through noncovalent interactions without involving any organic solvents or carriers. The results showed that the optimized mass ratio of SA to SSD was 1 : 4 at pH 5 and 35 °C in aqueous solution for the formation of SSD-SA NPs. The core–shell structured nanospheres with particle sizes of around 7 nm had excellent physical and chemical properties, such as strong positive charges (+47.8 mV) and good surface activity. SSD-SA NPs exhibited good quick-acting performance against Plutella xylostella larvae and Frankliniella occidentalis, and the insecticidal activities of SSD-SA NPs were significantly higher than that of the commercial SSD suspension. The genotoxicity evaluation showed that the genotoxicity of SSD to Vicia faba was reduced by a combination of self-assembly technologies and thus SSD-SA NPs posed a low risk to plant cells. These small molecular self-assembled SSD-SA NPs developed by a simple and green preparation process would have great potential for application in sustainable pest management.
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- 2021
14. Development of carrier-free self-assembled nanoparticles based on fenhexamid and polyhexamethylene biguanide for sustainable plant disease management
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Junfan Niu, Jiale Yang, Yongsong Cao, Xuan Li, Yuyang Tian, Xi Chen, Jingyue Tang, Yunhao Gao, Gang Tang, and Huachen Wang
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Aqueous solution ,Chemistry ,Biguanide ,medicine.drug_class ,Nanoparticle ,medicine.disease_cause ,Pollution ,Plant disease ,Self assembled ,Hydrophobic effect ,Chemical engineering ,medicine ,Environmental Chemistry ,Nanocarriers ,Genotoxicity - Abstract
The utilization of nanotechnology for the design of pesticide formulations has enormous potential to enhance the efficiency of pesticides and reduce their adverse impacts on the environment. However, the complicated fabrication process of nanosized carriers and their multi-step chemical modifications greatly restrict the practical applications of nanocarrier-based formulations. To address these issues, herein, self-assembled nanoparticles (NPs) based on fungicide fenhexamid (FHA) and polyhexamethylene biguanide (PHMB) were constructed by the electrostatic and hydrophobic interactions between FHA and PHMB in water solution without using carriers or adjuvants. The optimal temperature and mass ratio between FHA and PHMB for the formation of NPs were 60 °C and 10 : 7, respectively. Obtained spherical NPs with sizes of 50–250 nm were stable in neutral and acidic aqueous mediums and displayed desirable physicochemical properties (strong surface positive charges, low conductivity, high light stability, and good surface activity). Moreover, the combination of FHA and PHMB by the self-assembly of NPs had a synergistic effect on the antimicrobial activity, and NPs exhibited higher activities against Pseudomonas syringae pv. lachrymans, Botrytis cinerea, and Sclerotinia sclerotiorum than FHA and PHMB. Furthermore, the results of the genotoxicity evaluation in Vicia faba showed that the prepared NPs did not further increase the cytotoxicity of FHA. Overall, the formation of co-self-assembly nanoparticles of FHA and PHMB via a simple and green approach may be a novel avenue for sustainable plant disease management and provides inspiration to construct new nano-based pesticide formulations.
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- 2021
15. Controlled release of herbicides by 2,4-D-, MCPA-, and bromoxynil-intercalated hydrotalcite nanosheets
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Yan Li, Xuan Li, Xi Chen, Yongsong Cao, Xueyang Yu, Zhiyuan Zhou, Yuyang Tian, Yunhao Gao, and Huachen Wang
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Acetic acid ,chemistry.chemical_compound ,Volatilisation ,chemistry ,Bromoxynil ,Hydrotalcite ,Environmental Chemistry ,Leaching (agriculture) ,Inert gas ,Pollution ,MCPA ,Controlled release ,Nuclear chemistry - Abstract
Volatilization and leaching are two critical pathways for pesticide transportation from their applied areas to non-target regions. Nanocarrier-based formulations can improve the use efficiency and reduce the off-target effects of pesticides, however, the complicated preparation process seriously restricts the large-scale application of nanopesticides in the agricultural field. In this work, taking 2-(2,4-dichlorophenoxy) acetic acid (2,4-D), 2-methyl-4-chlorophenoxyacetic acid (MCPA), and 3,5-dibromo-4-hydroxybenzonitrile (bromoxynil) as model herbicides, herbicide-intercalated Zn–Al hydrotalcites (herbicide@HTlcs) were facilely fabricated by a modified co-precipitation method without heating, aging, organic solvents, and inert gas. The obtained herbicide@HTlcs showed high entrapment efficiencies (71.7%–86.7%), a sheet structure with an average size of 339.4 nm, and positive surface charges (+40.5). The volatilities of herbicide@HTlcs were reduced more than 3-fold compared with those of pure herbicides. The release rates of 2,4-D@HTlcs were in line with the selectivity sequence of HTlcs for the anions and controlled by non-Fickian diffusion. The leaching experiments performed in two agricultural topsoils collected from Beijing and Yunnan province and a grassland soil from Neimenggu province all demonstrated that the developed 2,4-D@HTlc nanosheets could evidently retard 2,4-D leaching through the soil. Additionally, 2,4-D@HTlcs exhibited no delay in the control efficacy against Amaranthus retroflexus compared with free 2,4-D sodium salt. This study provides a novel insight into the facile fabrication of controlled release formulations of pesticides that can reduce the volatilization and leaching risks simultaneously.
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- 2021
16. Supramolecular Self-Assembly of Herbicides with Reduced Risks to the Environment
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Gang Tang, Yuyang Tian, Yunhao Gao, Zhiyuan Zhou, Xi Chen, Yan Li, Xueyang Yu, Huachen Wang, Xuan Li, and Yongsong Cao
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Herbicides ,General Engineering ,General Physics and Astronomy ,Humans ,Nanoparticles ,Polyethyleneimine ,General Materials Science ,2,4-Dichlorophenoxyacetic Acid ,Particle Size - Abstract
The side effects caused by some pesticides with high off-target movement have brought great risks to the environment and human health. Here, taking 2,4-dichlorophenoxyacetic acid (2,4-D) as a model herbicide to reduce its volatilization and leaching, a supramolecular self-assembly mediated by branched polyethylenimine (B-PEI) was constructed through noncovalent molecular recognition. The results showed that 2,4-D/B-PEI nanoparticles (NPs) with a mean particle size of 168 nm can be formed by electrostatic interaction, hydrophobic effect, and π-π stacking when the mass ratio of 2,4-D to B-PEI with the average molecular weight of 10 000 (B-PEI 10k) was 40:20, and their generation was not susceptible to common inorganic ions such as Ca
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- 2022
17. Development of Poly(ionic liquids) Based on Mepiquat Chloride with Improved Rainfastness and Long-Lasting Activity on Growth Regulation of Cotton Plant
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Jianqiang Li, Rong Tang, Junfan Niu, Zhiyuan Zhou, Yongsong Cao, Yan Li, Jiale Yang, Yunhao Gao, Gang Tang, Yuyang Tian, Xi Chen, and Jingyue Tang
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Long lasting ,Plant growth ,Growth regulation ,Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,fungi ,food and beverages ,General Chemistry ,chemistry.chemical_compound ,Horticulture ,chemistry ,Ionic liquid ,Environmental Chemistry ,Mepiquat chloride - Abstract
As one of plant growth regulators, mepiquat chloride (MC) has become one of the most useful tools to manage plant geometry during cotton growth and development. Since it is highly water-soluble and...
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- 2020
18. Sustainable Preparation of Microcapsules with Desirable Stability and Bioactivity Using Phosphonium Ionic Liquid as a Functional Additive
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Rong Tang, Gang Tang, Hongqiang Dong, You Liang, Yunhao Gao, Yongsong Cao, Zhiyuan Zhou, Junfan Niu, Jiale Yang, and Jingyue Tang
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food.ingredient ,Materials science ,Ideal (set theory) ,Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,Environmental pollution ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Gelatin ,0104 chemical sciences ,Preparation method ,chemistry.chemical_compound ,food ,Chemical engineering ,chemistry ,Ionic liquid ,Environmental Chemistry ,Phosphonium ,0210 nano-technology - Abstract
A microcapsule is an ideal choice to realize effective utilization of a pesticide and reduce environmental pollution. A novel preparation method of a microcapsule was developed by complex coacervat...
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- 2020
19. A Bioresponsive System Based on Mesoporous Organosilica Nanoparticles for Smart Delivery of Fungicide in Response to Pathogen Presence
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Yongsong Cao, Junfan Niu, Hongqiang Dong, Rong Tang, Yunhao Gao, Jiale Yang, Gang Tang, Zhiyuan Zhou, Jingyue Tang, You Liang, and Xueyan Shi
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biology ,Renewable Energy, Sustainability and the Environment ,Chemistry ,General Chemical Engineering ,Sclerotinia sclerotiorum ,Nanoparticle ,02 engineering and technology ,General Chemistry ,Pesticide ,010402 general chemistry ,021001 nanoscience & nanotechnology ,biology.organism_classification ,01 natural sciences ,Prochloraz ,0104 chemical sciences ,Fungicide ,Mesoporous organosilica ,Environmental chemistry ,Environmental Chemistry ,0210 nano-technology ,Pathogen ,Biomineralization - Abstract
Stimulus-responsive release systems for site-specific pesticide delivery are one of the promising strategies to improve the use efficiency of pesticides as well as decrease environmental damage. He...
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- 2020
20. One-Pot Facile Synthesis of Double-Shelled Mesoporous Silica Microcapsules with an Improved Soft-Template Method for Sustainable Pest Management
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Yunhao Gao, Xi Chen, Yongsong Cao, Xuan Li, Huachen Wang, Xueyang Yu, Yuyang Tian, Yan Li, and Zhiyuan Zhou
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Materials science ,Time Factors ,Drug Compounding ,Ionic Liquids ,Capsules ,chemistry.chemical_compound ,Average size ,Coordination Complexes ,Animals ,General Materials Science ,Ammonium ,Tylenchoidea ,Pesticides ,Ivermectin ,Green Chemistry Technology ,Mesoporous silica ,Hydrogen-Ion Concentration ,Silicon Dioxide ,Controlled release ,Quaternary Ammonium Compounds ,Drug Liberation ,chemistry ,Solubility ,Delayed-Action Preparations ,Ionic liquid ,Degradation (geology) ,Pest Control ,Antibacterial activity ,Porosity ,Tannins ,Copper ,Nuclear chemistry ,Template method pattern - Abstract
A controlled release formulation based on silica microcapsules is an ideal selection to improve both the effective utilization and duration of pesticides to decrease ecological damage. Herein, a simple and green method for preparing double-shelled microcapsules was developed using a newly prepared quaternary ammonium ionic liquid (IL) as the functional additive to entrap avermectin (Ave) in mesoporous silica nanospheres (MSNs) and tannic acid-Cu (TA-Cu) complex as the sealing agent to form the core-shell structure (Ave-IL@MSN@TA-Cu). The obtained microcapsules with an average size of 538 nm had pH-responsive release property and good stability in soil. The half-life of microcapsules (34.66 days) was 3 times that of Ave emulsifiable concentrate (EC) (11.55 days) in a test soil, which illustrated that microcapsules could protect Ave from rapid degradation by microorganisms by releasing TA, copper, and quaternary ammonium in the soil. Ave-IL@MSN@TA-Cu microcapsules had better nematicidal activity and antibacterial activity than Ave EC due to the synergistic effect of Ave, IL, and copper incorporated in the microcapsules. Pot experiments showed that the control efficacy of microcapsules was 87.10% against Meloidogyne incognita, which is better than that of Ave EC (41.94%) at the concentration of 1.0 mg/plant by the root-irrigation method after 60 days of treatment owing to the extended duration of Ave in microcapsules. The simple and green method for the preparation of double-shelled microcapsules based on natural quaternary ammonium IL would have tremendous potential for the extensive development of controlled release pesticide formulations.
- Published
- 2021
21. Facile preparation of pH/pectinase responsive microcapsules based on CaCO3 using fungicidal ionic liquid as a nucleating agent for sustainable plant disease management
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Zhiyuan Zhou, Yunhao Gao, Gang Tang, Yuyang Tian, Yan Li, Huachen Wang, Xuan Li, Xueyang Yu, Zhiping Zhang, Yingbin Li, Yixiang Liu, and Yongsong Cao
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History ,Polymers and Plastics ,General Chemical Engineering ,Environmental Chemistry ,General Chemistry ,Business and International Management ,Industrial and Manufacturing Engineering - Published
- 2022
22. pH/redox/α-amylase triple responsive metal-organic framework composites for pest management and plant growth promotion
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You Liang, Sijin Wang, Huijuan Jia, Yijia Yao, Jiehui Song, Wenchao Yang, Yongsong Cao, Feng Zhu, and Zhongyang Huo
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Mechanics of Materials ,General Materials Science ,General Chemistry ,Condensed Matter Physics - Published
- 2022
23. Functionalized Silver Nanocapsules with Improved Antibacterial Activity Using Silica Shells Modified with Quaternary Ammonium Polyethyleneimine as a Bacterial Cell-Targeting Agent
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Jianqiang Li, Yongsong Cao, Zhiyuan Zhou, Junfan Niu, Yunhao Gao, Jiale Yang, Yan Li, Yuyang Tian, Xi Chen, Jingyue Tang, and Gang Tang
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0106 biological sciences ,Silver ,Nanoparticle ,Metal Nanoparticles ,Microbial Sensitivity Tests ,01 natural sciences ,Silver nanoparticle ,Nanocapsules ,Bacterial cell structure ,Ammonium Compounds ,Polyethyleneimine ,biology ,Chemistry ,010401 analytical chemistry ,General Chemistry ,Mesoporous silica ,biology.organism_classification ,Antimicrobial ,Silicon Dioxide ,0104 chemical sciences ,Anti-Bacterial Agents ,General Agricultural and Biological Sciences ,Antibacterial activity ,Clavibacter michiganensis ,010606 plant biology & botany ,Nuclear chemistry - Abstract
Silver nanoparticles (AgNPs) have remarkable and broad-spectrum antibacterial activities against Gram-positive (G+) and Gram-negative bacteria (G-). However, the negative surface potential of AgNPs limits their antibacterial activities due to the electrostatic repulsion with the negatively charged bacterial cell membrane. To address the limitation, AgNPs were loaded in the mesoporous silica nanoparticles by preparing silver core-mesoporous silica shell nanocapsules (Ag@MSNs), and then, a cationic antibacterial polymer, quaternary ammonium polyethyleneimine (QPEI), was used to modify Ag@MSNs for improving their surface potential and antibacterial activities. The results showed that the obtained Ag@MSN-QPEI exhibited a high positive surface potential (+39.6 mV) and a strong electrostatic attraction with Pseudomonas syringae pv. lachrymans cells in coculture, resulting in an excellent bacterial cell-targeting effect. At the same concentration, Ag@MSN-QPEI exhibited less silver content (reducing the silver content of Ag@MSNs by 19%), higher antibacterial activities, and longer effective duration against Clavibacter michiganensis subsp. michiganensis (G+) and P. syringae pv. lachrymans (G-) than Ag@MSNs and QPEI alone. The excellent bacterial cell-targeting effect and synergistic antibacterial action combined with QPEI accounted for the significantly enhanced antibacterial activities of Ag@MSN-QPEI. Therefore, using a cationic antibacterial polymer to confer the bacterial cell-targeting effect and synergistic antibacterial action would be extended to other antimicrobial materials.
- Published
- 2021
24. Enhanced Phototherapy Activity by Employing a Nanosilica-Coumarin–Acifluorfen Conjugate as the Supplementary Light Source Generator
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Gang Tang, Rong Tang, Junfan Niu, Yongsong Cao, Na Jiang, Jingyue Tang, Jianqiang Li, Zhiyuan Zhou, and Jiale Yang
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Materials science ,Protoporphyrin IX ,Renewable Energy, Sustainability and the Environment ,Singlet oxygen ,General Chemical Engineering ,02 engineering and technology ,General Chemistry ,Acifluorfen ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Coumarin ,Photochemistry ,01 natural sciences ,0104 chemical sciences ,Generator (circuit theory) ,chemistry.chemical_compound ,Light intensity ,Light source ,chemistry ,Environmental Chemistry ,0210 nano-technology ,Conjugate - Abstract
Photosensitizers need to be activated by external light to achieve phototherapy. However, unsatisfactory tissue penetration of light and uncontrollable light intensity limit their application. To o...
- Published
- 2019
25. Pyrimethanil Ionic Liquids Paired with Various Natural Organic Acid Anions for Reducing Its Adverse Impacts on the Environment
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Gang Tang, Weichen Wang, Zhiyuan Zhou, You Liang, Junfan Niu, Rong Tang, Tao Tang, Yongsong Cao, Jingyue Tang, and Jiale Yang
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Anions ,0106 biological sciences ,Ionic Liquids ,01 natural sciences ,Soil ,chemistry.chemical_compound ,Organic chemistry ,Organic Chemicals ,chemistry.chemical_classification ,Volatilisation ,010401 analytical chemistry ,Fungi ,General Chemistry ,Fungicides, Industrial ,0104 chemical sciences ,Kinetics ,Pyrimidines ,Solubility ,chemistry ,Ionic liquid ,Pyrimethanil ,Adsorption ,Volatilization ,General Agricultural and Biological Sciences ,010606 plant biology & botany ,Organic acid - Abstract
In this study, nine pyrimethanil ionic liquids (PILs) were synthesized through an acid-base reaction with nine naturally derived organic acid anions to improve the physicochemical properties and reduce the environmental adverse impacts. The PILs presented lower volatilization, higher photostability, better soil adsorption capacity, and improved fungicidal activity relative to pyrimethanil. When the length of the carbon chains in the anions was increased, the PILs showed better properties in terms of melting point, water solubility, volatility, and surface tension. The photostabilities and fungicidal activities of the PILs were significantly improved when cyclic compounds were used as the paired anion ions. With enhanced physicochemical properties and better fungicidal activity, PIL7 was selected as the best alternative to pyrimethanil. The intrinsic disadvantages of pyrimethanil could be surmounted using the system developed in the study; thus, ILs could have immense potential in the development of eco-friendly and efficient fungicides in the future.
- Published
- 2019
26. Ionic Liquid Forms of Mesotrione with Enhanced Stability and Reduced Leaching Risk
- Author
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You Liang, Jianqiang Li, Gang Tang, Weichen Wang, Hongqiang Dong, Rong Tang, Jiale Yang, Zhiyuan Zhou, and Yongsong Cao
- Subjects
Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,Triketone ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Mesotrione ,chemistry.chemical_compound ,chemistry ,Environmental chemistry ,Ionic liquid ,Environmental Chemistry ,Leaching (metallurgy) ,0210 nano-technology - Abstract
Mesotrione is one of the triketone herbicides that are widely used in corn fields to control broadleaf and some grass weeds because of its high herbicidal activity and crop safety. However, mesotri...
- Published
- 2019
27. Targeted release mechanism of λ-cyhalothrin nanocapsules using dopamine-conjugated silica as carrier materials
- Author
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Qianqian Geng, Yongsong Cao, Gang Tang, Hongqiang Dong, Jingyue Tang, Jiale Yang, Hong Huo, Wenbing Zhang, and Junfan Niu
- Subjects
Insecticides ,Dopamine ,Kinetics ,02 engineering and technology ,Conjugated system ,medicine.disease_cause ,01 natural sciences ,Nanocapsules ,chemistry.chemical_compound ,Colloid and Surface Chemistry ,Nitriles ,Pyrethrins ,0103 physical sciences ,medicine ,Physical and Theoretical Chemistry ,010304 chemical physics ,Surfaces and Interfaces ,General Medicine ,Silicon Dioxide ,021001 nanoscience & nanotechnology ,Cyhalothrin ,Targeted drug delivery ,chemistry ,Covalent bond ,Particle size ,0210 nano-technology ,Genotoxicity ,Biotechnology ,Nuclear chemistry - Abstract
Based on the specific binding between the receptors and ligands, novel targeted nanocapsules were prepared by using silica covalently bonded with dopamine to increase the insecticidal efficacy of λ-cyhalothrin. The targeted release mechanism of λ-cyhalothrin nanocapsules (NC) nanocapsules was verified by enzymatic analysis, fluorescent marking method and high performance liquid chromatograph. The results showed NC had uniform particle size (800 nm) and approximately 31% (w/w) loading efficiency of λ-cyhalothrin. The stability of λ-cyhalothrin in nanocapsuels was improved under different pH and temperature conditions. The NC showed sustainable release properties and the release kinetics mainly belonged to Fickian diffusion at all experimental conditions. Compared to λ-cyhalothrin emulsifiable concentrate and microcapsule suspension, the NC exhibited more excellent insecticidal activity. The micronucleus test indicated that NC significantly reduced the genotoxicity of λ-cyhalothrin to non-target organisms. This work offers a novel and efficient way to use targeted drug delivery system to improve the insecticidal activity, and may be extended to other pesticides in the future.
- Published
- 2019
28. Development of triflumizole ionic liquids containing anions of natural origin for improving the utilization and minimizing the adverse impacts on aquatic ecosystems
- Author
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Gang Tang, Junfan Niu, Rong Tang, Wenbing Zhang, Jingyue Tang, You Liang, Yongsong Cao, Laixin Luo, Hongqiang Dong, and Jiale Yang
- Subjects
Anions ,Environmental Engineering ,010504 meteorology & atmospheric sciences ,Ionic Liquids ,010501 environmental sciences ,01 natural sciences ,chemistry.chemical_compound ,Environmental Chemistry ,Waste Management and Disposal ,0105 earth and related environmental sciences ,Botrytis cinerea ,Active ingredient ,biology ,Water Pollution ,Imidazoles ,Biological activity ,biology.organism_classification ,Pollution ,Combinatorial chemistry ,Fungicides, Industrial ,Fungicide ,chemistry ,Ionic liquid ,Lipophilicity ,Degradation (geology) ,Water Pollutants, Chemical ,Salicylic acid - Abstract
Triflumizole, a broad-spectrum systemic fungicide, has been widely used for the management of fungal diseases in plants. However, rapid photolysis and high risk to the aquatic environment limit its application. Ionic liquid (IL) forms of active pharmaceutical ingredients are innovative and promising agents that can optimize the application of the starting chemicals through the selection, or functionalization of the counterions (cation or anion). In this study, triflumizole was paired with various natural organic acids to develop novel ILs for improving the physicochemical properties and reducing the toxicity to fish. The results showed that the obtained ILs had low surface tension and lipophilicity and could protect triflumizole against degradation under UV irradiation as well as exhibit more excellent biological activity against Botrytis cinerea than triflumizole. The IL forms of triflumizole reduced the dosage and frequency of this fungicide, accordingly minimized the negative effect on environment. The IL contained salicylic acid as anion decreased > 4-fold toxicity to adult zebrafish over TFM. The results reported here create new application possibilities for imidazole fungicides and offer some heuristic rules for the design of active pharmaceutical ingredients-ionic liquids.
- Published
- 2019
29. Preparation of kasugamycin conjugation based on ZnO quantum dots for improving its effective utilization
- Author
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Gang Tang, Weichen Wang, Hongqiang Dong, Na Jiang, You Liang, Yongheng Duan, Yongsong Cao, Jingyue Tang, Chen Fan, and Jiale Yang
- Subjects
General Chemical Engineering ,technology, industry, and agriculture ,02 engineering and technology ,General Chemistry ,equipment and supplies ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Kasugamycin ,Antimicrobial ,01 natural sciences ,Combinatorial chemistry ,Industrial and Manufacturing Engineering ,0104 chemical sciences ,chemistry.chemical_compound ,chemistry ,Controlled-Release Formulations ,Covalent bond ,Quantum dot ,Antimicrobial effect ,Environmental Chemistry ,Delivery system ,0210 nano-technology ,Photodegradation - Abstract
Controlled release formulations can reduce the losses of pesticides and prolong their effective duration. In this work, a novel pH responsive pesticide delivery system based on kasugamycin-conjugated ZnO quantum dots (KAS-ZnO QDs) was established via a cleavable benzoic–imine covalent bond. The as-prepared KAS-ZnO QDs could protect KAS against photodegradation effectively due to the UV shielding effect of KAS-ZnO QDs. The KAS and Zn2+ released from KAS-ZnO QDs in the acid condition could achieve a synergistic antimicrobial activity. The greenhouse experiment confirmed that application of KAS-ZnO QDs had a longer duration and a better antimicrobial activity against bacterial fruit blotch compared to KAS and NH2-ZnO QDs treatments, and showed no any toxicity to plants. Thus, pH-responsive KAS-ZnO QDs could achieve a synergistic antimicrobial effect and offer a new approach to manage plant diseases.
- Published
- 2019
30. Preparation and characterization of tebuconazole metal-organic framework-based microcapsules with dual-microbicidal activity
- Author
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You Liang, Guanglong Ding, Gang Tang, Jiale Yang, Jianqiang Li, Jingyue Tang, Hongqiang Dong, Wenbing Zhang, Yongsong Cao, Chen Fan, and Junfan Niu
- Subjects
food.ingredient ,biology ,Pectin ,General Chemical Engineering ,Metal ions in aqueous solution ,Nanoparticle ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,biology.organism_classification ,01 natural sciences ,Industrial and Manufacturing Engineering ,Xanthomonas campestris ,0104 chemical sciences ,Chitosan ,chemistry.chemical_compound ,food ,chemistry ,Environmental Chemistry ,Metal-organic framework ,Pectinase ,0210 nano-technology ,Nuclear chemistry ,Tebuconazole - Abstract
Based on excellent optical properties and microbicide activity, porphyrinic metal-organic frameworks (MOFs) are widely used as drug release carriers for their photodynamic therapy (PDT). In this work, porous porphyrinic MOFs (PCN-224) nanoparticles were synthesized for loading and controlling release of tebuconazole by using meso-tetra(4-carboxyphenyl)porphine (H2TCPP) as organic linker, metal ions clusters Zr (IV) as nodes, and subsequently assembled layer by layer of pectin and chitosan to obtain tebuconazole microcapsules (Tebuc@PCN@P@C). The results showed that the prepared MOFs had loading efficiency of tebuconazole about 30% (w/w), and the obtained stimuli-responsive microcapsules showed adjustable controlled-release characteristics with pectinase in acidity environment. Tebuc@PCN@P@C microcapsules displayed excellent double activities of PDT and microbicide against Xanthomonas campestris pv. campestris, Pseudomonas syringae pv. Tomato and Alternaria alternate. Safety evaluation on Chinese cabbage indicated they almost had no any damage to plants. Thus, stimuli-responsive dual-microbicidal MOFs microcapsules were demonstrated a great potential as an efficient delivery system in pesticide formulations.
- Published
- 2019
31. Sustainable synthesis of HKUST-1 and its composite by biocompatible ionic liquid for enhancing visible-light photocatalytic performance
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Hongqiang Dong, You Liang, Jiale Yang, Gang Tang, Wenbing Zhang, Chen Fan, and Yongsong Cao
- Subjects
Materials science ,Renewable Energy, Sustainability and the Environment ,Strategy and Management ,Composite number ,Stacking ,Industrial and Manufacturing Engineering ,chemistry.chemical_compound ,Adsorption ,Chemical engineering ,chemistry ,Yield (chemistry) ,Ionic liquid ,Photocatalysis ,Degradation (geology) ,General Environmental Science ,Visible spectrum - Abstract
Cyhalothrin is lethally toxic to aquatic organisms and has caused adverse effects in the hydrosphere. It is urgent to develop efficient and sustainable material for its removal. High-quality HKUST-1 was rapidly synthesized by cholinium ionic liquids (ILs) in water at room temperature. Yields of HKUST-1 showed obviously positive correlation with Hammett values of ILs. When applying CuCl2 as a copper salt, the yield of products was reached up to 95.5%, which was much higher than that of reported research. The reaction could be readily scalable with high space-time yield (242512 kg m−3 d−1). Additionally, ZrO2@HKUST-1 composite was successfully synthesized through a sol-gel method without complicated heat treatment. The whole process eliminates the use of environmentally unfriendly solvents/amines and enables the production of material at a reasonable cost. The obtained HKUST-1 and ZrO2@HKUST-1 possessed large pore volume (0.88–0.95 cm3 g−1) and high surface area (1152–1484 m2 g−1). The composite material was used for the adsorption/degradation of cyhalothrin and showed superior photocatalytic activity under moderate visible light, as compared to pure ZrO2, HKUST-1 and commercial TiO2 samples. ZrO2@HKUST-1 displayed the high cyhalothrin adsorption capacity of 333 mg g−1 through π−π stacking, which facilitated more target molecules to contact the composite in a short time. ZrO2 incorporating with HKUST-1 protected ZrO2 nanoparticles from rapid agglomeration, thus narrowed the band gap of the composite. Moreover, the formation of a junction between HKUST-1 and ZrO2 effectively reduced the recombination of photoinduced carriers in composite. Therefore, the novel ZrO2@HKUST-1 composite can be used as a sustainable efficient heterogeneous photocatalyst for the removal of organic pollutant.
- Published
- 2019
32. Effective tuning guanidinium ionic liquid as greener solvent for fast and sensitive determination of auxin herbicides
- Author
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Gang Tang, You Liang, Jiale Yang, Yongsong Cao, Hongqiang Dong, Chen Fan, and Wenbing Zhang
- Subjects
chemistry.chemical_classification ,Chromatography ,010401 analytical chemistry ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Fluorescence ,0104 chemical sciences ,Analytical Chemistry ,Solvent ,chemistry.chemical_compound ,chemistry ,Auxin ,Ionic liquid ,Degradation (geology) ,0210 nano-technology ,Derivatization ,Spectroscopy ,Potential toxicity - Abstract
Auxin herbicides have attracted continuously increasing attention because of their frequently application worldwide, slow degradation rates and potential toxicity to human beings. It is urgent to develop a fast and practical method to monitor them in environmental samples. Ionic liquids (ILs) are not intrinsically “green” and most of them are as toxic as other solvents. Therefore, tuning for maximizing advantageous properties of ILs and minimizing side effects are crucial steps. In this work, guanidinium IL was applied to preconcentrate and clean up ultra-trace auxin herbicides via designable binding sites. The structurally optimized IL had improved pretreatment performance and was significantly less cytotoxic than imidazolium IL toward human keratinocytes. For further improving the sensitivity of detection, we quantified the concentration of herbicides by a fast and mild fluorescence derivatization. Under optimized pretreatment conditions, high recoveries in real water samples (above 80%), short pretreatment time (
- Published
- 2019
33. Novel herbicide ionic liquids based on nicosulfuron with increased efficacy
- Author
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You Liang, Weichen Wang, Gang Tang, Hong Huo, Wenbing Zhang, Juanli Zhu, Jiale Yang, Hongqiang Dong, and Yongsong Cao
- Subjects
chemistry.chemical_classification ,High selectivity ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Catalysis ,0104 chemical sciences ,Partition coefficient ,chemistry.chemical_compound ,Hydrocarbon ,chemistry ,Ionic liquid ,Materials Chemistry ,Water environment ,Organic chemistry ,Leaching (metallurgy) ,Solubility ,0210 nano-technology ,Aromatic hydrocarbon - Abstract
Nicosulfuron is widely used in agriculture because of its high selectivity, wide weeding spectrum, and excellent herbicide performance. However, it is necessary to add adjuvants to stabilize nicosulfuron so as to maximize its weed-control efficacy. In this study, five novel herbicidal ionic liquids (HIL1-5) based on nicosulfuron were synthesized through an acid–base reaction by pairing with tetrabutylammonium, benzyltriethylammonium, 2-hydroxyethyltrimethylammonium, hexadecyltrimethylammonium, and hexadecypyridinium, representing different types of cations with short-chain branched hydrocarbon, long-chain branched hydrocarbon, fused heterocycle, and aromatic hydrocarbon, respectively. The results showed that HILs had a low solubility and surface tension, and moderate octanol–water partition coefficient, which could reduce the risk of leaching and polluting the water environment to some extent. Nicosulfuron-based herbicidal ionic liquids were more stable than the nicosulfuron under high temperature and ultraviolet radiation, and the stability of the herbicidal ionic liquids followed the order of HIL5 > HIL1 > HIL3 > HIL2 > HIL4. HIL5 without any adjuvants exhibited a better control efficacy against gramineous and broadleaf weeds than nicosulfuron. The results showed that the physicochemical property of herbicide could be optimized by selecting suitable paired ions to solve the problems existing in practical application of the herbicide and could reduce its negative impact on the environment.
- Published
- 2019
34. Amphiphilic prodrug nano-micelles of fipronil coupled with natural carboxylic acids for improving physicochemical properties and reducing the toxicities to aquatic organisms
- Author
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Yuyang Tian, Xiaohong Zhang, Yuqi Huang, Gang Tang, Yunhao Gao, Xi Chen, Zhiyuan Zhou, Yan Li, Xuan Li, Huachen Wang, Xueyang Yu, Yulu Liu, Guangyao Yan, Jialu Wang, and Yongsong Cao
- Subjects
General Chemical Engineering ,Environmental Chemistry ,General Chemistry ,Industrial and Manufacturing Engineering - Published
- 2022
35. Preparation of a Porphyrin Metal-Organic Framework with Desirable Photodynamic Antimicrobial Activity for Sustainable Plant Disease Management
- Author
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Yongsong Cao, Yunhao Gao, Yuyang Tian, Xi Chen, Jingyue Tang, Gang Tang, Zhiyuan Zhou, Jiale Yang, Junfan Niu, Yan Li, and Jianqiang Li
- Subjects
0106 biological sciences ,Porphyrins ,medicine.disease_cause ,01 natural sciences ,Chromosome aberration ,chemistry.chemical_compound ,Anti-Infective Agents ,Ascomycota ,medicine ,Photosensitizer ,Metal-Organic Frameworks ,Photosensitizing Agents ,biology ,Singlet oxygen ,fungi ,010401 analytical chemistry ,Sclerotinia sclerotiorum ,Disease Management ,Pathogenic bacteria ,General Chemistry ,biology.organism_classification ,Antimicrobial ,Combinatorial chemistry ,Porphyrin ,Plant disease ,0104 chemical sciences ,chemistry ,General Agricultural and Biological Sciences ,010606 plant biology & botany - Abstract
Considering the severity of plant pathogen resistance toward commonly used agricultural microbicides, as well as the potential threats of agrichemicals to the eco-environment, there is a pressing need for antimicrobial approaches that are capable of inactivating pathogens efficiently without the risk of inducing resistances and harm. In this work, a porphyrin metal-organic framework (MOF) nanocomposite was constructed by incorporating 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin tetra(p-toluenesulfonate) (TMPyP) as a photosensitizer (PS) in the cage of a variant MOF (HKUST-1) to efficiently produce singlet oxygen (1O2) to inactivate plant pathogens under light irradiation. The results showed that the prepared PS@MOF had a loading rate of PS about 12% (w/w) and excellent and broad-spectrum photodynamic antimicrobial activity in vitro against three plant pathogenic fungi and two pathogenic bacteria. Moreover, PS@MOF showed outstanding control efficacy against Sclerotinia sclerotiorum on cucumber in the pot experiment. Allium cepa chromosome aberration assays and safety evaluation on cucumber and Chinese cabbage indicated that PS@MOF had no genotoxicity and was safe to plants. Thus, porphyrin MOF demonstrated a great potential as an alternative and efficient new microbicide for sustainable plant disease management.
- Published
- 2021
36. Fabrication of pH-responsive nanoparticles for high efficiency pyraclostrobin delivery and reducing environmental impact
- Author
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Yan Li, You Liang, Yongsong Cao, Hongqiang Dong, Yuyang Tian, Yunhao Gao, Zhiyuan Zhou, Huo Zhongyang, and Jiehui Song
- Subjects
Environmental Engineering ,010504 meteorology & atmospheric sciences ,Nanoparticle ,010501 environmental sciences ,Environment ,01 natural sciences ,Rhizoctonia ,Contact angle ,chemistry.chemical_compound ,Tannic acid ,Environmental Chemistry ,Animals ,Photodegradation ,Waste Management and Disposal ,Zebrafish ,0105 earth and related environmental sciences ,Active ingredient ,Chemistry ,fungi ,Mesoporous silica ,Hydrogen-Ion Concentration ,Silicon Dioxide ,Strobilurins ,Pollution ,Acute toxicity ,Nanoparticles ,Phytotoxicity ,Porosity ,Nuclear chemistry - Abstract
In this work, a pH-responsive pesticide delivery system using mesoporous silica nanoparticles (MSNs) as the porous carriers and coordination complexes of Cu ions and tannic acid (TA-Cu) as the capping agent was established for controlling pyraclostrobin (PYR) release. The results showed the loading capacity of PYR@MSNs-TA-Cu nanoparticles for pyraclostrobin was 15.7 ± 0.5% and the TA-Cu complexes deposited on the MSNs surface could protect pyraclostrobin against photodegradation effectively. The nanoparticles had excellent pH responsive release performance due to the decomposition of TA-Cu complexes under the acid condition, which showed 8.53 ± 0.37%, 82.38 ± 1.67% of the encapsulated pyraclostrobin were released at pH 7.4, pH 4.5 after 7 d respectively. The contact angle and adhesion work of PYR@MSNs-TA-Cu nanoparticles on rice foliage were 86.3° ± 2.7° and 75.8 ± 3.1 mJ/m2 after 360 s respectively, indicating that TA on the surface of the nanoparticles could improve deposition efficiency and adhesion ability on crop foliage. The control effect of PYR@MSNs-TA-Cu nanoparticles against Rhizoctonia solani with 400 mg/L of pyraclostrobin was 85.82% after 7 d, while that of the same concentration of pyraclostrobin EC was 53.05%. The PYR@MSNs-TA-Cu nanoparticles did not show any phytotoxicity to the growth of rice plants. Meanwhile, the acute toxicity of PYR@MSNs-TA-Cu nanoparticles to zebrafish was decreased more than 9-fold compared with that of pyraclostrobin EC. Thus, pH-responsive PYR@MSNs-TA-Cu nanoparticles have great potential for enhancing targeting and environmental safety of the active ingredient.
- Published
- 2021
37. Allyl Isothiocyanate (AITC) Triggered Toxicity and FsYvc1 (a STRPC Family Member) Responded Sense in Fusarium solani
- Author
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Laixin Luo, Zhang Zhiping, Yingbin Li, Jianqiang Li, Liu Yixiang, and Yongsong Cao
- Subjects
Microbiology (medical) ,lcsh:QR1-502 ,Microbiology ,lcsh:Microbiology ,03 medical and health sciences ,chemistry.chemical_compound ,Fusarium solani ,sensing ,030304 developmental biology ,chemistry.chemical_classification ,0303 health sciences ,Reactive oxygen species ,biology ,030306 microbiology ,filamentous fungi ,Wild type ,FsYvc1 ,Biological activity ,allyl isothiocyanate ,biology.organism_classification ,Allyl isothiocyanate ,Molecular biology ,Congo red ,Fungicide ,chemistry ,Toxicity - Abstract
Allyl isothiocyanate (AITC) is a natural product used as a food additive. Due to its strong volatility and broad biological activity, AITC is considered as a bio-fumigant to control soil-borne fungal diseases in agriculture, creating an urgent need for evaluation of the antifungal activity of AITC. Here we study the effect of AITC on Fusarium solani growth and explore the molecular mechanisms. The results indicated that AITC causes rapid inhibition of F. solani after 5 min, hyphal deformity, and electrolyte leakage. A yeast-like vacuolar transient receptor potential channel regulator (FsYvc1, a STRPC family member) was identified in F. solani that seems to play a role in this fungi AITC sensitivity. Genetic evidence suggests the gene FsYvc1 is involved in F. solani growth, development, and pathogenicity. Loss of FsYvc1 resulted in hypersensitivity of F. solani to AITC and induced reactive oxygen species (ROS) accumulation ∼ 1.3 to 1.45- folds that of the wild type (WT), and no difference responses to CaCl2, NaCl, KCl, SDS, and Congo red when compared with WT. In addition, ΔFsYvc1-17 showed significantly reduced (∼ 1-fold) glutathione-S-transferase (GST) expression compared with the WT without AITC induction. Upon exposure to 4.8 μg/mL AITC for 3 h, the relative expression levels were ∼ 12-30 fold higher in both the WT and ΔFsYvc1-17. Nevertheless, no difference in GST expression level was observed between the WT and ΔFsYvc1-17. The current study provides novel insights into the toxicity mechanisms of AITC. Considering our results that show the key role of FsYvc1, we propose that it could act as a new molecular target for future fungicide development.
- Published
- 2020
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38. Preparation of Acifluorfen-Based Ionic Liquids with Fluorescent Properties for Enhancing Biological Activities and Reducing the Risk to the Aquatic Environment
- Author
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Jingyue Tang, Jiale Yang, Zhiyuan Zhou, Wenbing Zhang, Junfan Niu, Yongsong Cao, Jianqiang Li, Rong Tang, and Gang Tang
- Subjects
0106 biological sciences ,endocrine system ,Drug Compounding ,Ionic Liquids ,Plant Weeds ,Acifluorfen ,Hydrazide ,01 natural sciences ,Fluorescence ,chemistry.chemical_compound ,Double salt ,Organic chemistry ,Alkyl ,chemistry.chemical_classification ,Aqueous solution ,Singlet Oxygen ,Singlet oxygen ,Herbicides ,010401 analytical chemistry ,General Chemistry ,0104 chemical sciences ,Light intensity ,chemistry ,Solubility ,Nitrobenzoates ,Ionic liquid ,Sunlight ,General Agricultural and Biological Sciences ,010606 plant biology & botany - Abstract
In this work, 12 novel herbicidal ionic liquids (HILs) based on acifluorfen were prepared by pairing with the fluorescent hydrazides or different alkyl chains for increasing activities and reducing negative impacts on the aquatic environment. The results showed that the fluorescence of coumarin hydrazide in the HILs was applied as the internal and supplementary light source to meet the requirement of light wavelength range of acifluorfen, which improved the phytotoxicity of acifluorfen to weeds by enhancing singlet oxygen generation with increased sunlight utilization. The herbicidal activities of HILs were related positively with the length of chain of cation under high light intensity and depended mainly on the fluorescence characteristic of the cation under low light intensity, and the double salt IL forms of acifluorfen containing coumarin hydrazide and n-hexadecyltrimethylammonium had enhanced efficacies against broadleaf weeds in the field. Compared with acifluorfen sodium, HILs had lower water solubility, better surface activity, weaker mobility in soils, and higher decomposition temperature. These results demonstrated that HILs containing different cations provided a wider scope for fine-tuning of the physicochemical and biological properties of herbicides and established a promising way for the development of environmentally friendly herbicidal formulations.
- Published
- 2020
39. Preparation of MSNs-Chitosan@Prochloraz Nanoparticles for Reducing Toxicity and Improving Release Properties of Prochloraz
- Author
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You Liang, Hongqiang Dong, Gang Tang, Chen Fan, Wenbing Zhang, Yongsong Cao, Na Jiang, and Jiale Yang
- Subjects
Renewable Energy, Sustainability and the Environment ,Chemistry ,General Chemical Engineering ,fungi ,food and beverages ,Nanoparticle ,02 engineering and technology ,General Chemistry ,Pesticide ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Controlled release ,Prochloraz ,Acute toxicity ,0104 chemical sciences ,Chitosan ,chemistry.chemical_compound ,Toxicity ,Environmental Chemistry ,Food science ,0210 nano-technology - Abstract
Nanotechnology-based pesticide formulations can improve the utilization rate of pesticides and reduce their negative effects on the environment. In this work, prochloraz was encapsulated within the...
- Published
- 2018
40. p-Aromatic Isothiocyanates: Synthesis and Anti Plant Pathogen Activity
- Author
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Weichen Wang, L. Luo, Jianqiang Li, Jingyue Tang, Yongsong Cao, Hong Huo, and Junfan Niu
- Subjects
0301 basic medicine ,biology ,010405 organic chemistry ,food and beverages ,General Chemistry ,Erwinia ,biology.organism_classification ,Antimicrobial ,01 natural sciences ,0104 chemical sciences ,Fungicide ,Rhizoctonia solani ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,chemistry ,Yield (chemistry) ,Isothiocyanate ,Organic chemistry ,Antibacterial activity ,Bacteria - Abstract
In this study, a series of p-aromatic isothiocyanates are prepared by reacting p-aromatic amines with carbon disulphide and further treating with molecular iodine to yield corresponding isothiocyanate derivatives. The structures of newly synthesized compounds are confirmed by IR, NMR, and MS data. Activity of the products against plant pathogenic fungi and bacteria is tested and the structure-activity relationship is approached. p-Nitrophenyl isothiocyanate most efficiently inhibits Rhizoctonia solani and Erwinia carotovora. The order of seven aromatic isothiocyanates antifungicidal activity is following: p-nitrophenyl > p-methoxyphenyl > p-chlorophenyl > p-methylphenyl > p-ethylphenyl > phenyl > p-fluorophenyl. For antibacterial activity, the order was p-nitrophenyl > p-chlorophenyl > p-methylphenyl > p-ethylphenyl > p-fluorophenyl > phenyl > p-methoxyphenyl. The present study indicates that some of the compounds exhibit promising antimicrobial activity and can be used as an alternative to the traditional synthetic fungicides for controlling R. solani and E. carotovora.
- Published
- 2018
41. Developing ionic liquid forms of picloram with reduced negative effects on the aquatic environment
- Author
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You Liang, Wenbing Zhang, Yongsong Cao, Chen Fan, Gang Tang, Hongqiang Dong, Jiale Yang, Baitao Wang, Dandan Kong, and Guanglong Ding
- Subjects
Environmental Engineering ,Morpholines ,Potassium ,Ionic Liquids ,chemistry.chemical_element ,Picloram ,010402 general chemistry ,01 natural sciences ,chemistry.chemical_compound ,Adsorption ,Environmental Chemistry ,Isopropylamine ,Leaching (agriculture) ,Waste Management and Disposal ,Aqueous solution ,Herbicides ,010405 organic chemistry ,Chemistry ,Imidazoles ,Pollution ,0104 chemical sciences ,Partition coefficient ,Environmental chemistry ,Ionic liquid ,Environmental Pollution - Abstract
As a widely used herbicide, picloram has been frequently detected in the aquatic environment due to its high leaching potential and low adsorption by soil. To reduce aquatic environmental risk of this herbicide caused by leaching and runoff, five herbicidal ionic liquids (HILs) based on picloram were prepared by pairing isopropylamine, octylamine, octadecylamine, 1-methylimidazole, 4-methylmorpholine respectively. Their physicochemical properties including water solubility, octanol-water partition coefficient, surface activity, leaching, as well as soil adsorption were compared. The results showed that these properties could be adjusted by appropriate selection of counter cations. The HILs with long alkyl chains in cations had low water solubility and leaching characteristics, good surface tension and lipophilicity, as well as high soil adsorption. Compared with currently used picloram in the forms of potassium salts, HIL3 had more excellent herbicidal activity against broadleaf weeds and may offer a lower use dosage. The HILs based on picloram can reduce its negative effects on the aquatic environment and can be used as a desirable alternative to commercial herbicidal formulations of picloram in future.
- Published
- 2018
42. Synthesis and application of imidazolium-based ionic liquids as extraction solvent for pretreatment of triazole fungicides in water samples
- Author
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Gang Tang, Deng Wang, You Liang, Yongsong Cao, Hongqiang Dong, Dandan Kong, Chen Fan, Jiale Yang, and Wenbing Zhang
- Subjects
Detection limit ,chemistry.chemical_classification ,Chemistry ,010401 analytical chemistry ,Cationic polymerization ,Triazole ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Biochemistry ,High-performance liquid chromatography ,0104 chemical sciences ,Analytical Chemistry ,Solvent ,chemistry.chemical_compound ,Bromide ,Ionic liquid ,0210 nano-technology ,Alkyl ,Nuclear chemistry - Abstract
Five novel ionic liquids (ILs), 1,3-dibutylimidazolium bromide [BBMIm][Br], 1-pentyl-3-butylimidazolium bromide [BPMIm][Br], 1-hexyl-3-butylimidazolium bromide [BHMIm][Br], 1,1'-(butane-1,4-diyl)bis(3-butylimidazolium) bromide [C4(BMIm)2][Br2], and 1,1'-(butane-1,4-diyl)bis(3-methylimidazolium) bromide [C4(MIm)2][Br2], were prepared and used in situ to react with bis(trifluoromethane)sulfonamide lithium salt to extract the myclobutanil, tebuconazole, cyproconazole, and prothioconazole from water samples. The results showed that mono-cationic ILs had much better recovery than dicationic ILs, and mono-imidazolium IL bearing butyl groups at N-1 and N-3 sites had the best recovery. When the length of the alkyl substituent group was more than four carbons at N-3 site, the recovery decreased with increase of alkyl chain length of 1-butylimidazolium IL. The extraction efficiency order of triazoles from high to low was [BBMIm][Br], [BPMIm][Br], [BHMIm][Br], [BMIm][Br] (1-butyl-3-methylimidazolium bromide), [C4(BMIm)2]Br2, [C4(MIm)2]Br2. An in situ ionic liquid dispersive liquid-liquid microextraction combined with ultrasmall superparamagnetic Fe3O4 was established as a pretreatment method for enrichment of triazole fungicides in water samples by using the synthetic [BBMIm][Br] as the cationic IL and used to detect analytes followed by high-performance liquid chromatography. Under the optimized conditions, the proposed method showed a good linearity within a range of 5-250 μg L-1, with the determination coefficient (r2) varying from 0.998 to 0.999. High mean enrichment factors were achieved ranging from 187 to 323, and the recoveries of the target analytes from real water samples at spiking levels of 10.0, 20.0, and 50.0 μg L-1 were between 70.1% and 115.0%. The limits of detection for the analytes were 0.74-1.44 μg L-1, and the intra-day relative standard deviations varied from 5.23% to 8.65%. The proposed method can be further applied to analyze and monitor pesticides in other related samples. Graphical Abstract The scheme of the in-situ DLLME method for the determination of triazoles using the imidazolium-based ionic liquids.
- Published
- 2018
43. A simple and green preparation process for PRO@PIL-PHS-PEC microcapsules by using phosphonium ionic liquid as a multifunctional additive
- Author
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Yongsong Cao, Junfan Niu, Zhiyuan Zhou, Yan Li, Gang Tang, Yunhao Gao, Jiale Yang, Xi Chen, Jingyue Tang, and Yuyang Tian
- Subjects
inorganic chemicals ,Biocompatibility ,General Chemical Engineering ,Environmental pollution ,02 engineering and technology ,engineering.material ,010402 general chemistry ,01 natural sciences ,Industrial and Manufacturing Engineering ,chemistry.chemical_compound ,fluids and secretions ,Coating ,Environmental Chemistry ,Phosphonium ,General Chemistry ,Pesticide ,equipment and supplies ,021001 nanoscience & nanotechnology ,Controlled release ,0104 chemical sciences ,Solvent ,chemistry ,Chemical engineering ,Ionic liquid ,engineering ,bacteria ,0210 nano-technology - Abstract
Growing concerns about environmental pollution and future food supplies have encouraged the development of controlled release formulation of pesticides. Porous hollow silica (PHS) is an ideal carrier to prepare pesticide microcapsule due to its hollow structure, high surface area, and biocompatibility. However, the cumbersome preparation process of pesticide microcapsule based on PHS severely restricted its extensive development and application in pesticide products. Herein, an improved soft-template method for preparing pesticide loaded PHS was developed by using newly prepared tributylhexadecylphosphonium dicyanamide [P44416][N(CN)2] as the solvent and soft-template agent. The model pesticide prochloraz (PRO) was entrapped inside PHS in situ without loading process during the preparation process and a core–shell structure sphere (PRO@PIL-PHS-PEC microcapsule) was obtained by coating PRO@PIL-PHS with pectin in solution through electrostatic adsorption. The obtained PRO@PIL-PHS-PEC microcapsules had high drug encapsulation efficiency and good photostability with pectinase and pH responsive release properties. Plate antagonism tests and pot trials indicated that the PRO@PIL-PHS-PEC had a significant long-term control efficacy against S. sclerotiorum and no adverse impact on the growth of rapeseed plant. The prepared PRO@PIL-PHS-PEC could effectively reduce the use of pesticides by significantly improving the effective utilization rate and efficacy of pesticides. The simple and green method for synthesis of PRO@PIL-PHS-PEC based on PIL would have great potential for large-scale application of controlled release formulation in the field of pesticides.
- Published
- 2021
44. Metal-organic framework nanohybrid carrier for precise pesticide delivery and pest management
- Author
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You Liang, Gang Tang, Junfan Niu, Zhiyuan Zhou, Yongsong Cao, Yan Li, Jiale Yang, Yunhao Gao, Yuyang Tian, Xi Chen, and Jingyue Tang
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Integrated pest management ,Chemistry ,General Chemical Engineering ,fungi ,Fresh weight ,Crop growth ,02 engineering and technology ,General Chemistry ,Pesticide ,engineering.material ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Biocompatible material ,01 natural sciences ,Industrial and Manufacturing Engineering ,0104 chemical sciences ,engineering ,Environmental Chemistry ,Metal-organic framework ,Fertilizer ,Nanocarriers ,0210 nano-technology ,Nuclear chemistry - Abstract
Smart core–shell nanocarriers can release pesticides in response to stimuli from the microenvironment associated with pests and the physiological behaviors of protected crops. In this work, a smart nanocarrier (MIL-101(Fe)@silica) with dual functions of site-specific delivery and plant nutrition was fabricated to deliver chlorantraniliprole (CAP) for sustainable pest management. The results showed that the developed CAP@MIL-101(Fe)@silica with a size of approximately 270 nm had a stable core–shell nanostructure with a highly crystallized regular octahedron. The photostability of the drug loaded in the carrier under UV-light irradiation was 16.5 times higher than that of technical CAP. The introduction of the silica shell prevented the premature escape of CAP from the MIL-101(Fe) core in the environment and endowed the developed nanohybrid carrier with base-triggered release properties. In a laboratory bioassay, CAP@MIL-101(Fe)@silica had favorable insecticidal activity (LC50 = 0.389 mg/L) in controlling Plutella xylostella larvae. After fourteen days of spraying in the greenhouse experiment, the mortality of the CAP@MIL-101(Fe)@silica treatment (86%) against P. xylostella larvae was significantly higher than that of the CAP suspension concentration treatment (36.7%). In addition, MIL-101(Fe)@silica was safe for crops and could enhance the crop fresh weight and dry weight by 18.6–19.6% and 4.8–17.7%, respectively. Therefore, MIL-101(Fe)@silica could be used as a biocompatible carrier for site-specific pesticide delivery and simultaneously as a fertilizer for crop growth, which would be a novel route for the development of a precise pesticide delivery nanoplatform.
- Published
- 2021
45. In-situ ionic liquid dispersive liquid-liquid microextraction using a new anion-exchange reagent combined Fe 3 O 4 magnetic nanoparticles for determination of pyrethroid pesticides in water samples
- Author
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Deng Wang, Gang Tang, Yongsong Cao, Hongqiang Dong, Guanglong Ding, You Liang, Jiale Yang, Wenbing Zhang, Chen Fan, and Dandan Kong
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Detection limit ,Chromatography ,Aqueous solution ,Ion exchange ,Elution ,010401 analytical chemistry ,Extraction (chemistry) ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Biochemistry ,0104 chemical sciences ,Analytical Chemistry ,chemistry.chemical_compound ,chemistry ,Reagent ,Ionic liquid ,Environmental Chemistry ,0210 nano-technology ,Acetonitrile ,Spectroscopy - Abstract
In this work, in-situ ionic liquid dispersive liquid-liquid microextraction combined ultrasmall Fe 3 O 4 magnetic nanoparticles was developed as a kind of pretreatment method to detect pyrethroid pesticides in water samples. New anion-exchange reagents including Na[DDTC] and Na[N(CN) 2 ] were optimized for in-situ extraction pyrethroids, which showed enhanced microextraction performance. Pyrethroids were enriched by hydrophilic ionic liquid [P 4448 ][Br] (aqueous solution, 200 μL, 0.2 mmol mL −1 ) reaction in-situ with anion-exchange reagent Na[N(CN) 2 ] (aqueous solution, 300 μL, 0.2 mmol mL −1 ) forming hydrophobic ionic liquid as extraction agent in water sample (10 mL). Ultrasmall superparamagnetic iron oxide nanoparticles (30 mg) were used to collect the mixture of ionic liquid and pyrethroids followed by elution with acetonitrile. The extraction of ionic liquid strategies was unique and efficiently fulfilled with high enrichment factors (176–213) and good recoveries (80.20–117.31%). The method was successively applied to the determination of pyrethroid pesticides in different kinds of water samples with the limits of detection ranged from 0.16 to 0.21 μg L −1 . The proposed method is actually nanometer-level microextraction (average size 80 nm) with the advantages of simplicity, rapidity, and sensitivity.
- Published
- 2017
46. Development of Novel Urease-Responsive Pendimethalin Microcapsules Using Silica-IPTS-PEI As Controlled Release Carrier Materials
- Author
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You Liang, Dandan Kong, Guanglong Ding, Yongsong Cao, Mingcheng Guo, Chen Fan, Wenbing Zhang, Hongqiang Dong, Gang Tang, and Jiale Yang
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Polyethylenimine ,Urease ,biology ,Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,Environmental pollution ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Positive correlation ,01 natural sciences ,Controlled release ,0104 chemical sciences ,Pendimethalin ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,parasitic diseases ,Urea ,biology.protein ,Environmental Chemistry ,Organic chemistry ,Acid–base reaction ,0210 nano-technology - Abstract
Microcapsules are highly desirable for attaining the most effective utilization of the pesticide as well as reducing environmental pollution. In this work, a novel urease-responsive system was prepared using isocyanate-functionalized silica cross-linked with polyethylenimine (silica–IPTS–PEI) via urea bonds. The results demonstrated that the silica–IPTS–PEI microcapsules had a high pendimethalin loading efficiency (approximately 30% w/w) and could effectively enhance the thermal and light stability of pendimethalin. The release curves agreed with the Ritger and Peppas equation, and the release of pendimethalin was diffusion-controlled. The release rates of synthesized silica-IPTS-PEI microcapsules showed positive correlation with the temperature. In weak acid and base conditions, the pendimethalin release rates were higher than under neutral conditions, and the silica–IPTS–PEI microcapsules displayed excellent urease-responsive property with controlled release performance. Compared with pendimethalin emul...
- Published
- 2017
47. Ionic liquids based on bromoxynil for reducing adverse impacts on the environment and human health
- Author
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Yao Liu, You Liang, Hongqiang Dong, Chen Fan, Guanglong Ding, Gang Tang, Yongsong Cao, Wenbing Zhang, Dandan Kong, and Jiale Yang
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chemistry.chemical_classification ,Aqueous solution ,Volatilisation ,Bromoxynil ,010405 organic chemistry ,General Chemistry ,010402 general chemistry ,01 natural sciences ,Catalysis ,0104 chemical sciences ,Partition coefficient ,chemistry.chemical_compound ,chemistry ,Environmental chemistry ,Ionic liquid ,Materials Chemistry ,Solubility ,Counterion ,Alkyl - Abstract
Many herbicides exhibit some disadvantages such as high water solubility and volatility after application, which lead to potential threats to the aquatic and atmospheric environment and human health. Herbicidal ionic liquids (HILs) can effectively eliminate these intrinsic shortcomings by pairing with appropriate counterions (cation or anion). In this study, new HILs based on bromoxynil with eight typical cations were synthesized to reduce the negative impacts of currently used forms of bromoxynil. All the obtained compounds were investigated for solubility, octanol–water partition coefficient, surface activity, volatilization rate, and herbicidal activity in a greenhouse. The results showed that the HILs with long alkyl chains in the cations had reduced water solubility and volatilization rate, better surface activity and Kow, and substantially improved efficacy against weeds over bromoxynil sodium. Due to their adjustable physicochemical properties and improved herbicidal activity, the HILs could tremendously reduce the adverse impacts of bromoxynil on the environment and human health and may be potential alternatives to currently popular forms of bromoxynil in the future.
- Published
- 2017
48. Preparation of Ionic Liquid Forms of l-Glufosinate for Improving the Physicochemical Property and Enhancing Efficacy.
- Author
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Gang Tang, Yunhao Gao, Xi Chen, Zhiyuan Zhou, Yuyang Tian, Yan Li, and Yongsong Cao
- Published
- 2021
- Full Text
- View/download PDF
49. Nanosilica Schiff-Base Copper(II) Complexes with Sustainable Antimicrobial Activity against Bacteria and Reduced Risk of Harm to Plant and Environment
- Author
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Jianqiang Li, Guanglong Ding, Wenbing Zhang, Juanli Zhu, Zhang Zhaopeng, Tianyu Shi, Yongsong Cao, Dong Guo, and Darunee Punyapitak
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General Chemical Engineering ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,medicine.disease_cause ,01 natural sciences ,chemistry.chemical_compound ,medicine ,Environmental Chemistry ,Food science ,Water transport ,biology ,Renewable Energy, Sustainability and the Environment ,business.industry ,Chemistry ,General Chemistry ,021001 nanoscience & nanotechnology ,biology.organism_classification ,Antimicrobial ,Copper ,0104 chemical sciences ,Biotechnology ,Toxicity ,Phytotoxicity ,0210 nano-technology ,business ,Genotoxicity ,Bacteria ,Salicylic acid - Abstract
The increasing frequency of using traditional copper-based bactericides has resulted in phytotoxicity to plants and heavy metal pollution to the environment. A novel formulation of copper bactericides with excellent environmental compatibility and high systemicity as well as safety and low toxicity is a preferred choice to improve excessive defects of traditional copper-based bactericides. Nanosilica Schiff-base copper(II) complexes (Silica-NMP-Cu) were prepared and evaluated in terms of their antimicrobial activity and toxicity. The results showed that, compared with Kocide, the Silica-NMP-Cu had excellent antimicrobial activity against four kinds of bacteria with reduced 54.31–64.75% amount of copper and could move upward and downward freely in the plant with the water transportation as well as increase disease resistance by increasing the concentration of salicylic acid in plants, which could reduce the frequency of using copper-based bactericide. Application of the cucumber safety assessment and Alliu...
- Published
- 2016
50. Fabrication of smart stimuli-responsive mesoporous organosilica nano-vehicles for targeted pesticide delivery
- Author
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Na Jiang, Yongsong Cao, Weichen Wang, Jiale Yang, Hongqiang Dong, Zhiyuan Zhou, Rong Tang, You Liang, Yunhao Gao, and Junfan Niu
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Insecticides ,Environmental Engineering ,Light ,Starch ,Health, Toxicology and Mutagenesis ,0211 other engineering and technologies ,Nanoparticle ,02 engineering and technology ,010501 environmental sciences ,Moths ,01 natural sciences ,chemistry.chemical_compound ,Drug Stability ,Environmental Chemistry ,Animals ,Photodegradation ,Waste Management and Disposal ,Avermectin ,0105 earth and related environmental sciences ,Active ingredient ,021110 strategic, defence & security studies ,Drug Carriers ,Ivermectin ,Mesoporous silica ,Hydrogen-Ion Concentration ,Silicon Dioxide ,Pollution ,Glutathione ,Mesoporous organosilica ,Drug Liberation ,Kinetics ,chemistry ,Chemical engineering ,Nanoparticles ,Pest Control ,Nanocarriers ,alpha-Amylases ,Oxidation-Reduction ,Porosity - Abstract
It is highly desirable to construct stimuli-responsive nanocarriers for improving pesticides targeting and preventing the pesticides premature release. In this work, a novel redox and α-amylase dual stimuli-responsive pesticide delivery system was established by bonding functionalized starch with biodegradable disulfide-bond-bridged mesoporous silica nanoparticles which loaded with avermectin (avermectin@MSNs-ss-starch nanoparticles). The results demonstrated that the loading capacity of avermectin@MSNs-ss-starch nanoparticles for avermectin was approximately 9.3 %. The starch attached covalently on the mesoporous silica nanoparticles could protect avermectin from photodegradation and prevent premature release of active ingredient. Meanwhile, the coated starch and disulfide-bridged structure of nanoparticles could be decomposed and consequently release of the avermectin on demand when nanoparticles were metabolized by glutathione and α-amylase in insects. The bioactivity survey confirmed that avermectin@MSNs-ss-starch nanoparticles had a longer duration in controlling Plutella xylostella larvae compared to avermectin emulsifiable concentrate. In consideration of the superior insecticidal activity and free of toxic organic solvent, this target-specific pesticide release system has promising potential in pest management.
- Published
- 2019
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