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409 results on '"Wang, Jin-Yun"'

8. High-resolution remote thermometry based on Bi3+-doped 0D zinc halide hybrids.

Author

Shi, Cui-Mi, Xue, Shu-Hua, Wang, Jin-Yun, Xu, Liang-Jin, and Chen, Zhong-Ning

Abstract

Developing highly sensitive optical thermometers is of great significance due to their capability to enable remote and non-contact temperature measurements, rendering them highly applicable in diverse and harsh environments. Herein we report a temperature-dependent phosphor of 0D metal halide hybrid by incorporating Bi3+ into the (MePPh3)2ZnCl4 matrix. Through Bi3+ doping, the initially non-luminescent (MePPh3)2ZnCl4 matrix exhibits a deep-blue emission centered at 453 nm, with a photoluminescence quantum yield (PLQY) of 5.71% and a Stokes shift of 75 nm at room temperature. Experimental characterization demonstrates that exciton-like luminescence of Bi3+ is mainly responsible for the blue emission. Single crystals of Bi3+-doped (MePPh3)2ZnCl4 show an unusual correlation between photoluminescence (PL) lifetime and temperature. Particularly, the dependence of luminescence lifetime on temperature is most remarkable in the temperature range of 80 to 100 K with an exceptional sensitivity up to 0.09 K−1, representing one of the best levels for thermometry based on PL decay lifetime. Our work not only provides a viable strategy for designing a novel, environmentally friendly, and stable blue emitter, but also paves the way for precise thermometric application at low temperature. [ABSTRACT FROM AUTHOR]

Published
2024
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13. Chiral 3D Perovskite Formation Induced by Chiral Templates

Author

Yang, Han-Jiang, Li, Bingxuan, Wang, Jin-Yun, Xu, Liang-Jin, and Chen, Zhong-Ning

Abstract

Chiral 3D perovskites pose challenges compared to lower-dimensional variants due to limited chiral organic cation options. Here, we present a universal and controlled method for synthesizing chiral 3D lead halide perovskites using organic amines or alcohols as chiral templates. Introducing these templates to PbCl2in N,N-dimethylformamide (DMF) under acidic conditions induces the crystallization of R/S [DMA]PbCl3(DMA = dimethylamine). The resulting structure aligns with the templates used, stemming from the helical Pb2Cl95–chain as verified by single-crystal X-ray diffraction. Furthermore, the chiral perovskite exhibits absorption and circular dichroism (CD) signals in the high-energy band, enabling the circularly polarized light (CPL) detection in the UV spectrum. A CPL detector constructed by this chiral perovskite demonstrates excellent performance, boasting an anisotropy factor for photocurrent (gIph) of 0.296. Our work not only introduces a novel and controllable method for crafting chiral perovskites but also opens new avenues for circularly polarized light detection.

Published
2024
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14. N-alkylamides from Litsea cubeba (Lour.) Pers. with potential anti-inflammatory activity.

Author

Shen, Guo-Dong, Zhang, Yin-Yan, Yang, Nian-Qi, Yang, Tong, Wang, Ting, Lu, Shi-Cheng, Wang, Jin-Yun, Wang, Yun-Song, and Yang, Jing-Hua

Subjects
ANTI-inflammatory agents, COUMARINS, MOLECULAR docking, NICOTINAMIDE, AMIDES, LEAD compounds
Abstract

Six amides, including a new N-alkylamide (1), four known N-alkylamides (2–5) and one nicotinamide (6) were isolated from Litsea cubeba (Lour.) Pers., which is a pioneer herb traditionally utilized in medicine. Their structures were elucidated on the basis of 1D and 2D NMR experiments and by comparison of their spectroscopic and physical data with the literature values. Cubebamide (1) is a new cinnamoyltyraminealkylamide and possessed obvious anti-inflammatory activity against NO production with IC50 values of 18.45 μM. Further in-depth pharmacophore-based virtual screening and molecular docking were carried out to reveal the binding mode of the active compound inside the 5-LOX enzyme. The results indicate that L. cubeba, and the isolated amides might be useful in the development of lead compounds for the prevention of inflammatory diseases. [ABSTRACT FROM AUTHOR]

Published
2024
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27. N-alkylamides from Litsea cubeba (Lour.) Pers. with potential anti-inflammatory activity

Author

Shen, Guo-Dong, Zhang, Yin-Yan, Yang, Nian-Qi, Yang, Tong, Wang, Ting, Lu, Shi-Cheng, Wang, Jin-Yun, Wang, Yun-Song, and Yang, Jing-Hua

Abstract

Six amides, including a new N-alkylamide (1), four known N-alkylamides (2–5) and one nicotinamide (6) were isolated from Litsea cubeba (Lour.) Pers., which is a pioneer herb traditionally utilized in medicine. Their structures were elucidated on the basis of 1D and 2D NMR experiments and by comparison of their spectroscopic and physical data with the literature values. Cubebamide (1) is a new cinnamoyltyraminealkylamide and possessed obvious anti-inflammatory activity against NO production with IC50 values of 18.45 μM. Further in-depth pharmacophore-based virtual screening and molecular docking were carried out to reveal the binding mode of the active compound inside the 5-LOX enzyme. The results indicate that L. cubeba, and the isolated amides might be useful in the development of lead compounds for the prevention of inflammatory diseases.

Published
2023
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33. Scissor-like Au 4 Cu 2 Cluster with Phosphorescent Mechanochromism and Thermochromism.

Author

Wu, Xue-Meng, Wang, Jin-Yun, Huang, Ya-Zi, and Chen, Zhong-Ning

Subjects
*COPPER, *THERMOCHROMISM, *CHARGE transfer, *X-ray crystallography, *PHOSPHORESCENCE, *LUMINESCENCE
Abstract

Reaction of [Au(tht)2](ClO4) (tht = tetrahydrothiophene), [Cu(CH3CN)4](ClO4), 3,6-di-tert-butyl-1,8-diethynyl-9H-carbazole (H3decz), and bis(2-diphenylphosphinophenyl)ether (POP) in the presence of triethylamine (NEt3) gave the cluster complex Au4Cu2(decz)2(POP)2 as yellow crystals. As revealed by X-ray crystallography, the Au4Cu2 cluster exhibits scissor-like structure sustained by two decz and two POP ligands and stabilized by Au-Cu and Au-Au interactions. The Au4Cu2 cluster shows bright yellow to orange photoluminescence upon irradiation at >300 nm, arising from 3[π (decz)→5d (Au)] 3LMCT (ligand-to-metal charge transfer) and 3[π→π* (decz)] 3IL (intraligand) triplet states as revealed by theoretical and computational studies. When it is mechanically ground, reversible phosphorescence conversion from yellow to red is observed owing to more compact molecular packing and thus stronger intermetallic interaction. Variable-temperature luminescence studies reveal that it displays distinct red-shifts of the emission whether the temperature is elevated or lowered from ambient temperature, suggestive of exceptional thermochromic phosphorescence characteristics. [ABSTRACT FROM AUTHOR]

Published
2023
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48. High‐Performance Ladder‐Type Heteroheptacene‐Based Nonfullerene Acceptors Enabled by Asymmetric Cores with Enhanced Noncovalent Intramolecular Interactions

Author

Tang, Changquan, primary, Ma, Xiaoling, additional, Wang, Jin‐Yun, additional, Zhang, Xue, additional, Liao, Ruochuan, additional, Ma, Yunlong, additional, Wang, Peng, additional, Wang, Pengsong, additional, Wang, Tao, additional, Zhang, Fujun, additional, and Zheng, Qingdong, additional

Published
2021
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50. Control of Intramolecular Electron Transport Pathways by Varying Localized Electron Distribution

Author

Zhou, Dahai, primary, Duan, Ping, additional, Zhou, Yu, additional, Li, Chuan, additional, Wang, Yaping, additional, Chen, Lichuan, additional, Wang, Jin-Yun, additional, Qu, Kai, additional, Tang, Chun, additional, Shi, Jia, additional, Liu, Junyang, additional, Zhang, Qian-Chong, additional, Chen, Zhong-Ning, additional, and Hong, Wenjing, additional

Published
2021
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