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39 results on '"Shen, Cheng-Long"'

10. Energy Transfer‐Assisted Color Conversion of Persistent Mechanoluminescence in RhB@SiO2/SrAl2O4:Eu,Dy System for Multilevel Information Encryption.

Author

Deng, Yuan, Peng, Danni, Shen, Cheng‐Long, Sun, Junlu, Zheng, Guangsong, Chang, Shulong, Liang, Yachuan, He, Jun, Shan, Chong‐Xin, and Dong, Lin

Subjects
FLUORESCENCE resonance energy transfer, RHODAMINE B, ENERGY transfer, INFORMATION storage & retrieval systems, NANOPARTICLES
Abstract

Persistent mechanoluminescence (PML) is highly desirable for its ability to overcome transient‐emitting behavior, but its applications are hindered by the limited emission wavelengths. Herein, a universal chemical interlinkage‐assisted efficient energy transfer (ET) strategy is introduced to achieve color conversion from green to red in traditional PML materials. A straightforward chemical route to create the RhB@SiO2/SAOED system is established via covalent chemical interlinkage by depositing mesoporous silica‐encapsulated Rhodamine B (RhB) nanoparticles (RhB@SiO2) onto SrAl2O4:Eu, Dy (SAOED) particles. The resulting system exhibits a high ET efficiency of 53.5%. The multicolor PML of the RhB@SiO2/SAOED system remains visible to the naked eye for exceeding 28 s after mechanical stimulation. With this unique PML behavior, the RhB@SiO2/SAOED system demonstrates the potential applications ranging from visualized reading activities to multi‐mode anticounterfeiting. This universal PML color‐conversion strategy provides a new approach to high‐performance mechanical light energy‐conversion systems and may further inspire more diverse functional applications of classical PML materials. [ABSTRACT FROM AUTHOR]

Published
2024
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12. Supramolecular Aggregation of Carbon Nanodots

Author

Song, Run-Wei, primary, Shen, Cheng-Long, additional, Zheng, Guang-Song, additional, Ni, Qing-Chao, additional, Liu, Kai-Kai, additional, Zang, Jin-Hao, additional, Dong, Lin, additional, Lou, Qing, additional, and Shan, Chong-Xin, additional

Published
2023
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13. Chemiluminescent carbon nanodots as sensors for hydrogen peroxide and glucose

Author

Shen Cheng-Long, Zheng Guang-Song, Wu Meng-Yuan, Wei Jian-Yong, Lou Qing, Ye Yang-Li, Liu Zhi-Yi, Zang Jin-Hao, Dong Lin, and Shan Chong-Xin

Subjects
carbon nanodots, chemiluminescence, glucose, hydrogen peroxide, sensor, Physics, QC1-999
Abstract

Hydrogen peroxide (H2O2) is an important product generated in the body and related to many pathophysiological processes and glucose metabolism disorder can cause many fatal diseases in living bodies. Therefore, the sensing of H2O2 and glucose is of great significance in disease diagnostics and treatment. Fluorescent carbon dots (CDs) are one new class of nanoprobes for H2O2 and glucose. Nevertheless, the CD-based sensor is always based on its fluorescence response, which is influenced by the auto-fluorescent interference. Herein, efficient fluorescent CDs were synthesized by one-pot solvothermal method, and the CDs exhibit bright and persistent deep-red (DR) chemiluminescence (CL) in bis(2,4,6-trichlorophenyl) oxalate and H2O2 solution with a CL quantum yield of (8.22 ± 0.30) × 10−3, which is amongst the highest values in ever reported nanomaterials for chemical analysis. Employing the CDs as CL nanoprobes, sensitive sensing for H2O2 has been achieved with a detection limit of 11.7 μM, and further for glucose detection with a detection limit of 12.6 μM. The DR CL CDs is promising to be applied in blood glucose analysis or in vivo biosensor.

Published
2020
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25. Identification of an m6A‐related lncRNA prognostic signature in colorectal cancer.

Author

Shi, Zhi‐Liang, Yang, Xiaoling, Shen, Cheng‐Long, and Zhou, Guo‐Qiang

Subjects
COLORECTAL cancer, DISEASE risk factors, LINCRNA, ADENOSINES, OVERALL survival, HEREDITARY nonpolyposis colorectal cancer
Abstract

Data sets of colorectal cancer (CRC) were obtained from The Cancer Genome Atlas (TCGA), three N6‐methyladenosine (m6A) subtypes were identified using 21 m6A‐related long noncoding RNAs (lncRNAs) and differential m6A subtypes of different CRC tumors were determined in this study to evaluate the m6A expression and the prognosis of patients with CRC. Subsequently, eight key lncRNAs were identified based on co‐expression with 21 m6A‐related genes in CRC tumors using the single‐factor Cox and least absolute shrinkage and selection operator. Finally, an m6A‐related lncRNA risk score model of CRC tumor was established using multifactor Cox regression based on the eight important lncRNAs and found to have a better performance in evaluating the prognosis of patients in the TCGA‐CRC data set. TCGA‐CRC tumor samples were divided based on the risk scores: high and low. Then, the clinical characteristics, tumor mutation load, and tumor immune cell infiltration difference between the high‐ and low‐risk‐score groups were explored, and the predictive ability of the risk score was assessed for immunotherapeutic benefits. We found that the risk score model can determine the overall survival, be a relatively independent prognostic indicator, and better evaluate the immunotherapeutic benefits for patients with CRC. This study provides data support for accurate immunotherapy in CRC. [ABSTRACT FROM AUTHOR]

Published
2023
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33. Additional file 1: of Carbon Nanodots as Dual-Mode Nanosensors for Selective Detection of Hydrogen Peroxide

Author

Shen, Cheng-Long, Su, Li-Xia, Jin-Hao Zang, Li, Xin-Jian, Lou, Qing, and Chong-Xin Shan

Abstract

Fig. S1. (a) TEM image of CDs after adding 0.5 M H2O2. (b,c) Histogram of distribution from TEM before (b) and (c) after adding 0.5 M H2O2. Fig. S2. Excited-emission matrix of the CDs with 2500 rpm (a), 5000 rpm(b), 7500 rpm(c) centrifugation and with the addition in 0.5 M H2O2 (d). Fig. S3. Absorption spectrum of the CDs normalized at 500 nm before and after adding 0.5 M H2O2. Fig. S4. XRD pattern of the CDs after adding 0.5 M H2O2. Fig. S5. Raman spectrum of the CDs after adding 0.5 M H2O2. Fig. S6. (a) Fluorescence stability of the CDs before and after adding 0.5 M H2O2 with the emission at 450 nm and 500 nm, respectively. (b) Photographic images of the CDs and the CDs under 1M H2O2 after 3 day. Fig. S7. FTIR spectra of the CDs before and after adding 0.5 M H2O2. Fig. S8. (a,b) XPS (full survey) of the CDs before (a) and after (b) adding 0.5 M H2O2. (c,d) XPS (C1s) of CDs before (c) and after (d) adding 0.5 M H2O2. (e,f) XPS (O1s) of CDs before (e) and after (f) adding 0.5 M H2O2. Fig. S9. The fluorescence intensity of the 112.5 Îźg mL-1 CDs diluted for 10, 20, 30 and 40 times. Fig. S10. The normalized fluorescence intensity of the CDs under different concentrations of H2O2 (0, 0.05, 0.1, 0.15, 0.25, 0.5, 1 and 2 M, from left to right). Fig. S11. The liner range of the absorption for sensing H2O2. Fig. S12. Fluorescence spectra of CDs in the presence of different oxidants. Fig. S13. UV-vis spectra of CDs in the presence of different oxidants. Fig. S14. The fluorescence intensity varied with time after injecting H2O2. Tab. S1. Limit of detection (LOD) of CDs sensor for H2O2. Tab. S2. Comparison of analytical performance of different nanosensors for H2O2 determination. (PDF 1384 kb)

Published
2017
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35. Efficient phosphorescence from synthetic diamonds

Author

Su, Li-Xia, primary, Zhao, Chun-Xiang, additional, Lou, Qing, additional, Niu, Chun-Yao, additional, Fang, Chao, additional, Li, Zhen, additional, Shen, Cheng-Long, additional, Zang, Jin-Hao, additional, Jia, Xiao-Peng, additional, and Shan, Chong-Xin, additional

Published
2018
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