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author：

Wu, S. (Wu, S..) [1] | Cheng, X. (Cheng, X..) [2] | Huang, H. (Huang, H..) [3] | Yang, Q. (Yang, Q..) [4] | Wang, Y. (Wang, Y..) [5] | Zhuang, Y. (Zhuang, Y..) [6] | Li, W. (Li, W..) [7] | Liu, Y. (Liu, Y..) [8] | Lin, H. (Lin, H..) [9] | Niu, H. (Niu, H..) [10] | Wang, J. (Wang, J..) [11] | Wu, K. (Wu, K..) [12] | Fu, X. (Fu, X..) [13] | Long, J. (Long, J..) [14]

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Abstract：

Achieving　fast　exciton　dissociation　is　a　critical　factor　for　optimizing　the　performance　of　organic　photocatalysts　in　solar　energy　conversion.　This　work　demonstrates　the　end-group-dependent　ultrafast　exciton　dissociation　in　supramolecular　perylene　monoimide　(PMI)　nanostructures.　A　series　of　PMI　molecules　are　designed　by　connecting　the　amide　site　with　methylene　carboxyl　(─CH2─COOH),　methylene　phosphonic　acid　(─CH2─PO3H2),　and　methylene　sulfonic　acid　(─CH2─SO3H)　to　increase　the　dipole　moment　and　built-in　electric　field,　thereby　effectively　diminishing　exciton　binding　energy.　Upon　photoexcitation,　self-assembled　PMI-CH2-SO3H　nanoribbons　(NRs),　which　exhibit　the　lowest　exciton　binding　energy　of　29.4　meV,　achieve　ultrafast　exciton　dissociation　within　0.25 ps,　leading　to　the　formation　of　charge-separated　excitons　from　charge-transfer　states.　This　dissociation　rate　is　≈40　and　16　times　faster　than　that　observed　in　PMI-CH2-COOH　(NRs)　and　PMI-CH2-PO3H2　(NRs),　respectively.　Following　the　deposition　of　Pt　nanoparticles　on　PMI　NRs,　Pt/PMI-CH2-SO3H　(NRs)　demonstrates　an　H2　evolution　of　21.2　mmol　g−1　h−1　under　visible　light　irradiation　(λ　＞ 420 nm),　outperforming　Pt/PMI-CH2-COOH　(NRs)　and　Pt/PMI-CH2-PO3H2　(NRs)　by　factors　of　53　and　5.4,　respectively.　©　2025　Wiley-VCH　GmbH.

Keyword：

built-in electric fields hydrogen evolution perylene monoimide photocatalysis supramolecular organic semiconductors

Community：

  • [ 1 ] [Wu S.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Cheng X.]Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China
  • [ 3 ] [Huang H.]School of Energy and Environment, Southeast University, Nanjing, 210096, China
  • [ 4 ] [Yang Q.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 5 ] [Wang Y.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 6 ] [Zhuang Y.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 7 ] [Li W.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 8 ] [Liu Y.]State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 110623, China
  • [ 9 ] [Lin H.]Beijing Key Laboratory for Green Catalysis and Separation, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
  • [ 10 ] [Niu H.]Beijing Key Laboratory for Green Catalysis and Separation, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
  • [ 11 ] [Wang J.]State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 110623, China
  • [ 12 ] [Wu K.]State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 110623, China
  • [ 13 ] [Fu X.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 14 ] [Long J.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China

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Small

ISSN： 1613-6810

Year： 2025

Issue： 14

Volume： 21

1 3 . 0 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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