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1,864 results on '"Zhang, Deqing"'

1. Multi-heterojunctioned plastics with high thermoelectric figure of merit

Author

Wang, Dongyang, Ding, Jiamin, Ma, Yingqiao, Xu, Chunlin, Li, Zhiyi, Zhang, Xiao, Zhao, Yao, Zhao, Yue, Di, Yuqiu, Liu, Liyao, Dai, Xiaojuan, Zou, Ye, Kim, BongSoo, Zhang, Fengjiao, Liu, Zitong, McCulloch, Iain, Lee, Myeongjae, Chang, Cheng, Yang, Xiao, Wang, Dong, Zhang, Deqing, Zhao, Li-Dong, Di, Chong-an, and Zhu, Daoben

Published
2024
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10. Electric field–catalyzed single-molecule Diels-Alder reaction dynamics

Author

Yang, Chen, Liu, Zitong, Li, Yanwei, Zhou, Shuyao, Lu, Chenxi, Guo, Yilin, Ramirez, Melissa, Zhang, Qingzhu, Li, Yu, Liu, Zhirong, Houk, KN, Zhang, Deqing, and Guo, Xuefeng

Subjects
Organic Chemistry, Chemical Sciences
Abstract

Precise time trajectories and detailed reaction pathways of the Diels-Alder reaction were directly observed using accurate single-molecule detection on an in situ label-free single-molecule electrical detection platform. This study demonstrates the well-accepted concerted mechanism and clarifies the role of charge transfer complexes with endo or exo configurations on the reaction path. An unprecedented stepwise pathway was verified at high temperatures in a high-voltage electric field. Experiments and theoretical results revealed an electric field-catalyzed mechanism that shows the presence of a zwitterionic intermediate with one bond formation and variation of concerted and stepwise reactions by the strength of the electric field, thus establishing a previously unidentified approach for mechanistic control by electric field catalysis.

Published
2021

14. Confronting Racism in Chemistry Journals

Author

Burrows, Cynthia J, Huang, Jiaxiang, Wang, Shu, Kim, Hyun Jae, Meyer, Gerald J, Schanze, Kirk, Lee, T Randall, Lutkenhaus, Jodie L, Kaplan, David, Jones, Christopher, Bertozzi, Carolyn, Kiessling, Laura, Mulcahy, Mary Beth, Lindsley, Craig W, Finn, MG, Blum, Joel D, Kamat, Prashant, Choi, Wonyong, Snyder, Shane, Aldrich, Courtney C, Rowan, Stuart, Liu, Bin, Liotta, Dennis, Weiss, Paul S, Zhang, Deqing, Ganesh, Krishna N, Atwater, Harry A, Gooding, J Justin, Allen, David T, Voigt, Christopher A, Sweedler, Jonathan, Schepartz, Alanna, Rotello, Vincent, Lecommandoux, Sébastien, Sturla, Shana J, Hammes-Schiffer, Sharon, Buriak, Jillian, Steed, Jonathan W, Wu, Hongwei, Zimmerman, Julie, Brooks, Bryan, Savage, Phillip, Tolman, William, Hofmann, Thomas F, Brennecke, Joan F, Holme, Thomas A, Merz, Kenneth M, Scuseria, Gustavo, Jorgensen, William, Georg, Gunda I, Wang, Shaomeng, Proteau, Philip, Yates, John R, Stang, Peter, Walker, Gilbert C, Hillmyer, Marc, Taylor, Lynne S, Odom, Teri W, Carreira, Erick, Rossen, Kai, Chirik, Paul, Miller, Scott J, Shea, Joan-Emma, McCoy, Anne, Zanni, Martin, Hartland, Gregory, Scholes, Gregory, Loo, Joseph A, Milne, James, Tegen, Sarah B, Kulp, Daniel T, and Laskin, Julia

Subjects
Chemical Sciences
Published
2020

15. Update to Our Reader, Reviewer, and Author CommunitiesApril 2020

Author

Burrows, Cynthia J, Wang, Shu, Kim, Hyun Jae, Meyer, Gerald J, Schanze, Kirk, Lee, T Randall, Lutkenhaus, Jodie L, Kaplan, David, Jones, Christopher, Bertozzi, Carolyn, Kiessling, Laura, Mulcahy, Mary Beth, Lindsley, Craig W, Finn, MG, Blum, Joel D, Kamat, Prashant, Aldrich, Courtney C, Rowan, Stuart, Liu, Bin, Liotta, Dennis, Weiss, Paul S, Zhang, Deqing, Ganesh, Krishna N, Sexton, Patrick, Atwater, Harry A, Gooding, J Justin, Allen, David T, Voigt, Christopher A, Sweedler, Jonathan, Schepartz, Alanna, Rotello, Vincent, Lecommandoux, Sébastien, Sturla, Shana J, Hammes-Schiffer, Sharon, Buriak, Jillian, Steed, Jonathan W, Wu, Hongwei, Zimmerman, Julie, Brooks, Bryan, Savage, Phillip, Tolman, William, Hofmann, Thomas F, Brennecke, Joan F, Holme, Thomas A, Merz, Kenneth M, Scuseria, Gustavo, Jorgensen, William, Georg, Gunda I, Wang, Shaomeng, Proteau, Philip, Yates, John R, Stang, Peter, Walker, Gilbert C, Hillmyer, Marc, Taylor, Lynne S, Odom, Teri W, Carreira, Erick, Rossen, Kai, Chirik, Paul, Miller, Scott J, McCoy, Anne, Shea, Joan-Emma, Zanni, Martin, Murphy, Catherine, Scholes, Gregory, and Loo, Joseph A

Subjects
Chemical Sciences
Published
2020

16. Update to Our Reader, Reviewer, and Author Communities-April 2020.

Author

Burrows, Cynthia J, Wang, Shu, Kim, Hyun Jae, Meyer, Gerald J, Schanze, Kirk, Lee, T Randall, Lutkenhaus, Jodie L, Kaplan, David, Jones, Christopher, Bertozzi, Carolyn, Kiessling, Laura, Mulcahy, Mary Beth, Lindsley, Craig W, Finn, MG, Blum, Joel D, Kamat, Prashant, Aldrich, Courtney C, Rowan, Stuart, Bin Liu, Liotta, Dennis, Weiss, Paul S, Zhang, Deqing, Ganesh, Krishna N, Sexton, Patrick, Atwater, Harry A, Gooding, J Justin, Allen, David T, Voigt, Christopher A, Sweedler, Jonathan, Schepartz, Alanna, Rotello, Vincent, Lecommandoux, Sébastien, Sturla, Shana J, Hammes-Schiffer, Sharon, Buriak, Jillian, Steed, Jonathan W, Wu, Hongwei, Zimmerman, Julie, Brooks, Bryan, Savage, Phillip, Tolman, William, Hofmann, Thomas F, Brennecke, Joan F, Holme, Thomas A, Merz, Kenneth M, Scuseria, Gustavo, Jorgensen, William, Georg, Gunda I, Wang, Shaomeng, Proteau, Philip, Yates, John R, Stang, Peter, Walker, Gilbert C, Hillmyer, Marc, Taylor, Lynne S, Odom, Teri W, Carreira, Erick, Rossen, Kai, Chirik, Paul, Miller, Scott J, McCoy, Anne, Shea, Joan-Emma, Zanni, Martin, Murphy, Catherine, Scholes, Gregory, and Loo, Joseph A

Subjects
Chemical Sciences, General Chemistry
Published
2020

30. Targeted and Imaging-guided In Vivo Photodynamic Therapy of Tumors Using Dual-functional, Aggregation-induced Emission Nanoparticles

Author

Sun, Xianhe, zebibula, Abudureheman, Dong, Xiaobiao, Li, Gonghui, Zhang, Guanxin, Zhang, Deqing, Qian, Jun, and He, Sailing

Subjects
Quantitative Biology - Tissues and Organs, Physics - Biological Physics, Physics - Medical Physics, Physics - Optics
Abstract

Dual-functional nanoparticles, with the property of aggregation-induced emission and the capability of reactive oxygen species, were used to achieve passive/active targeting of tumor. Good contrast in in vivo imaging and obvious therapeutic efficiency were realized with a low dose of AIE nanoparticles as well as a low power density of light, resulting in negligible side effects., Comment: 30 pages, 7 figures

Published
2017

31. Facile fabrication of a nickel hydroxide@carbon nanotube composite for enhanced supercapacitance performance.

Author

Ba, Xuewei, Zhang, Huaikang, Zhou, Xiang, Cheng, Cheng, Lan, Xinyu, Han, Xinyu, Huang, Wenping, Zhang, Deqing, Yu, Yan, and Li, Shuhua

Subjects
CARBON-based materials, CARBON nanotubes, ENERGY density, COMPOSITE materials, METALLIC composites, SUPERCAPACITOR electrodes, NICKEL
Abstract

Carbon-based materials/metal hydroxide composite materials are one type of the most promising electrode materials for improving the performance of supercapacitors. They have the advantages of low cost, controllable morphology, high theoretical capacity, and excellent stability. In this study, nickel hydroxide nanosheets were grown vertically on the surface of carbon nanotubes (Ni(OH)2@CNTs) by a wet chemical method at low temperatures. The unique spatial configuration provides a larger specific surface area and exposes more electrochemically active sites, which is more conducive to improving electrochemical performance. The prominent conductivity of carbon nanotubes can quickly transfer electrons and improve the electrochemical cycling stability of the composite. The Ni(OH)2@CNTs composite exhibits excellent electrochemical performance with a specific capacitance of 1234 F g−1 at a current density of 1 A g−1 under a three-electrode system. In addition, an asymmetric supercapacitor (ASC) assembled using Ni(OH)2@CNTs as a cathode material shows an energy density of 65.63 W h kg−1 at a power density of 752.39 W kg−1 and a capacity retention rate of 85.9% after 10 000 cycles at a current density of 2 A g−1. The results indicate that Ni(OH)2@CNTs has prospects for application as a cathode material in high-performance supercapacitors. [ABSTRACT FROM AUTHOR]

Published
2024
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33. Direct single-molecule dynamic detection of chemical reactions.

Author

Guan, Jianxin, Jia, Chuancheng, Li, Yanwei, Liu, Zitong, Wang, Jinying, Yang, Zhongyue, Gu, Chunhui, Su, Dingkai, Houk, Kendall N, Zhang, Deqing, and Guo, Xuefeng

Abstract

Single-molecule detection can reveal time trajectories and reaction pathways of individual intermediates/transition states in chemical reactions and biological processes, which is of fundamental importance to elucidate their intrinsic mechanisms. We present a reliable, label-free single-molecule approach that allows us to directly explore the dynamic process of basic chemical reactions at the single-event level by using stable graphene-molecule single-molecule junctions. These junctions are constructed by covalently connecting a single molecule with a 9-fluorenone center to nanogapped graphene electrodes. For the first time, real-time single-molecule electrical measurements unambiguously show reproducible large-amplitude two-level fluctuations that are highly dependent on solvent environments in a nucleophilic addition reaction of hydroxylamine to a carbonyl group. Both theoretical simulations and ensemble experiments prove that this observation originates from the reversible transition between the reactant and a new intermediate state within a time scale of a few microseconds. These investigations open up a new route that is able to be immediately applied to probe fast single-molecule physics or biophysics with high time resolution, making an important contribution to broad fields beyond reaction chemistry.

Published
2018

34. Nonhalogenated Solvent Processable and High‐Density Photopatternable Polymer Semiconductors Enabled by Incorporating Hydroxyl Groups in the Side Chains

Author

Gao, Chenying, primary, Li, Cheng, additional, Yang, Yiming, additional, Jiang, Ziling, additional, Xue, Xiang, additional, Chenchai, Kaiyuan, additional, Liao, Junchao, additional, Shangguan, Zhichun, additional, Wu, Changchun, additional, Zhang, Xisha, additional, Jia, Di, additional, Zhang, Fengjiao, additional, Liu, Guoming, additional, Zhang, Guanxin, additional, and Zhang, Deqing, additional

Published
2024
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50. From VIB- to VB-Group Transition Metal Disulfides: Structure Engineering Modulation for Superior Electromagnetic Wave Absorption

Author

Cheng, Junye, primary, Jin, Yongheng, additional, Zhao, Jinghan, additional, Jing, Qi, additional, Gu, Bailong, additional, Wei, Jialiang, additional, Yi, Shenghui, additional, Li, Mingming, additional, Nie, Wanli, additional, Qin, Qinghua, additional, Zhang, Deqing, additional, Zheng, Guangping, additional, and Che, Renchao, additional

Published
2023
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