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[期刊论文]

Molecular Dipole-Induced Photoredox Catalysis for Hydrogen Evolution over Self-Assembled Naphthalimide Nanoribbons

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author:

Lin, Huan (Lin, Huan.) [1] | Wang, Junhui (Wang, Junhui.) [2] | Zhao, Jiwu (Zhao, Jiwu.) [3] | Unfold

Indexed by:

EI

Abstract:

D-π-A type 4-((9-phenylcarbazol-3-yl)ethynyl)-N-dodecyl-1,8-naphthalimide (CZNI) with a large dipole moment of 8.49 D and A-π-A type bis[(4,4′-1,8-naphthalimide)-N-dodecyl]ethyne (NINI) with a negligible dipole moment of 0.28 D, were smartly designed and synthesized to demonstrate the evidence of a molecular dipole as the dominant mechanism for controlling charge separation of organic semiconductors. In aqueous solution, these two novel naphthalimides can self-assemble to form nanoribbons (NRs) that present significantly different traces of exciton dissociation dynamics. Upon photoexcitation of NINI-NRs, no charge-separated excitons (CSEs) are formed due to the large exciton binding energy, accordingly there is no hydrogen evolution. On the contrary, in the photoexcited CZNI-NRs, the initial bound Frenkel excitons are dissociated to long-lived CSEs after undergoing ultrafast charge transfer within ca. 1.25 ps and charge separation within less than 5.0 ps. Finally, these free electrons were injected into Pt co-catalysts for reducing protons to H2 at a rate of ca. 417 μmol h−1 g−1, correspondingly an apparent quantum efficiency of ca. 1.3 % can be achieved at 400 nm. © 2022 Wiley-VCH GmbH

Keyword:

Binding energy Charge transfer Dipole moment Excitons Nanoribbons Separation

Community:

  • [ 1 ] [Lin, Huan]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 2 ] [Lin, Huan]Department of Applied Physics, The Hong Kong Polytechnic University, 999077, Hong Kong
  • [ 3 ] [Lin, Huan]Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Wang, Junhui]State Key Laboratory of Molecular Reaction Dynamics, Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian; 116023, China
  • [ 5 ] [Zhao, Jiwu]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 6 ] [Zhuang, Yan]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Liu, Bingqian]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 8 ] [Zhu, Yujiao]Department of Applied Physics, The Hong Kong Polytechnic University, 999077, Hong Kong
  • [ 9 ] [Jia, Huaping]Department of Applied Physics, The Hong Kong Polytechnic University, 999077, Hong Kong
  • [ 10 ] [Wu, Kaifeng]State Key Laboratory of Molecular Reaction Dynamics, Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian; 116023, China
  • [ 11 ] [Shen, Jinni]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 12 ] [Fu, Xianzhi]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 13 ] [Zhang, Xuming]Department of Applied Physics, The Hong Kong Polytechnic University, 999077, Hong Kong
  • [ 14 ] [Long, Jinlin]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China

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Source :

Angewandte Chemie - International Edition

ISSN: 1433-7851

Year: 2022

Issue: 12

Volume: 61

1 6 . 6

JCR@2022

1 6 . 1 0 0

JCR@2023

ESI HC Threshold:74

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 53

30 Days PV: 1

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