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Start Over Author "Jinhua Chen" Journal chemical communications
12 results on '"Jinhua Chen"'

1. Label-free and near-zero-background-noise photoelectrochemical assay of methyltransferase activity based on a Bi2S3/Ti3C2 Schottky junction

Author

Yamin Fu, Jinhua Chen, Mengyue Liu, Feng Ding, Cuicui Du, Xiaohua Zhang, and Shihui Si

Subjects
Detection limit, Methyltransferase, Materials science, business.industry, Schottky barrier, Metals and Alloys, Zero (complex analysis), General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Background noise, CpG site, Materials Chemistry, Ceramics and Composites, Optoelectronics, business, Label free
Abstract

Herein, a novel label-free photoelectrochemical (PEC) sensing platform with near-zero background noise was developed for M.SssI CpG methyltransferase (M.SssI MTase) activity assay based on a new Schottky junction of Bi2S3/Ti3C2 nanosheets. The proposed PEC sensor exhibited a low detection limit and a high signal-to-noise ratio for M.SssI MTase assay.

Published
2020

2. Spontaneous deposition of Ir nanoparticles on 2D siloxene as a high-performance HER electrocatalyst with ultra-low Ir loading

Author

Jianhang Nie, Junlin Huang, Cuicui Du, Jinhua Chen, Qin Meng, Xiaohua Zhang, Feng Ding, and Qi Dai

Subjects
Materials science, Metals and Alloys, Nanoparticle, chemistry.chemical_element, General Chemistry, Electrocatalyst, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Chemical engineering, chemistry, Materials Chemistry, Ceramics and Composites, Iridium, Deposition (chemistry)
Abstract

Herein, 2D siloxene terminated by surface functional groups of Si-H and Si-OH is demonstrated to be an effective support for the spontaneous deposition of iridium nanoparticles (Ir NPs) to promote HER electrocatalysis. With ultra-low Ir loading, the obtained Ir NPs/siloxene electrocatalyst shows superior electrocatalytic activity toward the HER.

Published
2020

3. Sensitive photoelectrochemical assay of Pb2+ based on DNAzyme-induced disassembly of the 'Z-scheme' TiO2/Au/CdS QDs system

Author

Xiaohua Zhang, Mengyue Liu, Ke Xiao, Jinhua Chen, Cuicui Du, and Leixia Meng

Subjects
Detection limit, Materials science, 010401 analytical chemistry, technology, industry, and agriculture, Metals and Alloys, Deoxyribozyme, Nanotechnology, General Chemistry, 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Materials Chemistry, Ceramics and Composites, Biosensor
Abstract

Herein, based on DNAzyme-induced disassembly of the "Z-scheme" TiO2/Au/CdS QDs system, a facile and sensitive photoelectrochemical biosensor was developed for lead ion assay and a low detection limit of 0.13 pM was obtained.

Published
2020

4. A sensitive photoelectrochemical methyltransferase activity assay based on a novel 'Z-scheme' CdSe QD/afGQD heterojunction and multiple signal amplification strategies

Author

Cuicui Du, Yanmei Li, Ke Xiao, Jinhua Chen, Xiaohua Zhang, and Leixia Meng

Subjects
Detection limit, Methyltransferase, Materials science, 010405 organic chemistry, business.industry, Metals and Alloys, Heterojunction, General Chemistry, 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Materials Chemistry, Ceramics and Composites, Optoelectronics, business, Signal amplification
Abstract

Here, based on a newly developed “Z-scheme” CdSe QD/afGQD heterojunction and multiple signal amplification strategies, a sensitive photoelectrochemical methyltransferase activity assay was carried out and a low detection limit of 0.046 U mL−1 was obtained.

Published
2019

5. A new electrochemical aptasensor for sensitive assay of a protein based on the dual-signaling electrochemical ratiometric method and DNA walker strategy

Author

Caixia Zhu, Xiaoyu Li, Mengyue Liu, Xiaohua Zhang, and Jinhua Chen

Subjects
Aptamer, Biosensing Techniques, 02 engineering and technology, 010402 general chemistry, Electrochemistry, 01 natural sciences, Catalysis, Limit of Detection, Materials Chemistry, Detection limit, Chemistry, Thrombin, Metals and Alloys, A protein, DNA walker, DNA, General Chemistry, Aptamers, Nucleotide, 021001 nanoscience & nanotechnology, Combinatorial chemistry, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Highly sensitive, Dielectric Spectroscopy, Ceramics and Composites, 0210 nano-technology, Biosensor
Abstract

Herein, a new electrochemical aptamer-based biosensor for highly sensitive assay of thrombin has been developed based on the dual-signaling electrochemical ratiometric method and the DNA walker strategy, and shows a low detection limit of about 56 fM.

Published
2018

6. A post-labeling strategy based on dye-induced peeling of the aptamer off single-walled carbon nanotubes for electrochemical aptasensing

Author

Jinhua Chen, Ting Wang, Qingji Xie, Yingchun Fu, Shouzhuo Yao, Penghao Li, and Lijuan Bu

Subjects
Materials science, Aptamer, Nanotechnology, Biosensing Techniques, Carbon nanotube, Microscopy, Atomic Force, Electrochemistry, Catalysis, law.invention, law, Materials Chemistry, Coloring Agents, Electrodes, Detection limit, Nanotubes, Carbon, Carbon chemistry, Thrombin, Metals and Alloys, Electrochemical Techniques, General Chemistry, Aptamers, Nucleotide, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Electrode, Ceramics and Composites, Spectrophotometry, Ultraviolet, Gold
Abstract

A simple and efficient post-labeling strategy based on dye-induced peeling of the aptamer molecules off single-walled carbon nanotubes was developed for electrochemical aptasensing of thrombin with a detection limit down to 3 pM.

Published
2011

7. Stabilization of platinum nanoparticles dispersed on carbon nanotubes by ionic liquid polymer

Author

Jinhua Chen, Bohua Wu, Yaming Yu, Dan Hu, Xiaohua Zhang, and Yinjie Kuang

Subjects
chemistry.chemical_classification, Materials science, Inorganic chemistry, Metals and Alloys, chemistry.chemical_element, General Chemistry, Polymer, Carbon nanotube, Platinum nanoparticles, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, law.invention, chemistry.chemical_compound, chemistry, law, Ionic liquid, Materials Chemistry, Ceramics and Composites, Methanol, Carbon, Polymer thin films
Abstract

Due to the protection of ionic liquid polymer thin film, the long-term operation stability of carbon nanotube-supported platinum nanoparticles for methanol electrooxidation has been improved.

Published
2010

8. A DNA-based electrochemical strategy for label-free monitoring the activity and inhibition of protein kinase

Author

Shouzhuo Yao, Qinpeng Shen, Xiahong Xu, Wang Li, Jinhua Chen, Yingchun Fu, and Zhou Nie

Subjects
inorganic chemicals, Metal Nanoparticles, Electrochemistry, Ruthenium, Catalysis, chemistry.chemical_compound, Materials Chemistry, A-DNA, Amino Acid Sequence, Phosphorylation, Protein kinase A, Label free, Chemistry, Metals and Alloys, DNA, Electrochemical Techniques, General Chemistry, Phosphorylated Peptide, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Immobilized Proteins, Biochemistry, Ceramics and Composites, Gold, Zirconium, Protein Kinases
Abstract

A novel label-free electrochemical strategy for monitoring the activity and inhibition of protein kinase is developed, based on the linkage between the phosphorylated peptide and DNA functionalized Au nanoparticles (DNA-AuNPs) by Zr(4+) and the chronocoulometric response of [Ru(NH(3))(6)](3+) absorbed on the DNA-AuNPs.

Published
2009

9. Crystal structure of a flexible self-assembled two-dimensional square network complex [Cu2(C3H2O4)2(H 2O)2(4,4′-bpy)]·H2O

Author

Huaqiang Zeng, Jianmin Li, Jinhua Chen, Quanming Wang, and Xintao Wu

Subjects
Crystallography, Materials science, Materials Chemistry, Metals and Alloys, Ceramics and Composites, General Chemistry, Crystal structure, Catalysis, Square (algebra), Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Self assembled
Abstract

The structure of a self-assembled two-dimensional square network complex, [Cu 2 (C 3 H 2 O 4 ) 2 (H 2 O) 2 (4,4′-bpy)]·H 2 O, comprising both flexible and rigid ligands and having a large inner cavity of 15.776(3) × 15.786(2) A, is reported.

Published
1997

10. A post-labeling strategy based on dye-induced peeling of the aptamer off single-walled carbon nanotubes for electrochemical aptasensingElectronic supplementary information (ESI) available: Detailed description of the experimental section and additional figures. See DOI: 10.1039/c0cc05188h

Author

Yingchun Fu, Ting Wang, Lijuan Bu, Qingji Xie, Penghao Li, Jinhua Chen, and Shouzhuo Yao

Subjects
CARBON nanotubes, ELECTROCHEMISTRY, EXPERIMENTAL design, DYES & dyeing, CHEMICAL peel, THROMBIN, BIOSENSORS
Abstract

A simple and efficient post-labeling strategy based on dye-induced peeling of the aptamer molecules off single-walled carbon nanotubes was developed for electrochemical aptasensing of thrombin with a detection limit down to 3 pM. [ABSTRACT FROM AUTHOR]

Published
2011
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11. Stabilization of platinum nanoparticles dispersed on carbon nanotubes by ionic liquid polymer.

Author

Bohua Wu, Dan Hu, Yaming Yu, Yinjie Kuang, Xiaohua Zhang, and Jinhua Chen

Subjects
PLATINUM nanoparticles, STABILIZING agents, DISPERSION (Chemistry), CARBON nanotubes, IONIC liquids, POLYMER films, METHANOL, ELECTROLYTIC oxidation
Abstract

Due to the protection of ionic liquid polymer thin film, the long-term operation stability of carbon nanotube-supported platinum nanoparticles for methanol electrooxidation has been improved. [ABSTRACT FROM AUTHOR]

Published
2010
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