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Organic Photovoltaic Catalyst with Extended Exciton Diffusion for High-Performance Solar Hydrogen Evolution.
Zhu, Yufan; Zhang, Zhenzhen; Si, Wenqin; Sun, Qianlu; Cai, Guilong; Li, Yawen; Jia, Yixiao; Lu, Xinhui; Xu, Weigao; Zhang, Shiming; Lin, Yuze.
Afiliación
  • Zhu Y; Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
  • Zhang Z; Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation, Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211816, Jiangsu, China.
  • Si W; Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
  • Sun Q; University of Chinese Academy of Sciences, Beijing 100049, China.
  • Cai G; Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
  • Li Y; University of Chinese Academy of Sciences, Beijing 100049, China.
  • Jia Y; Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
  • Lu X; Department of Physics, The Chinese University of Hong Kong, Hong Kong 999077, China.
  • Xu W; Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
  • Zhang S; University of Chinese Academy of Sciences, Beijing 100049, China.
  • Lin Y; Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
J Am Chem Soc ; 144(28): 12747-12755, 2022 Jul 20.
Article en En | MEDLINE | ID: mdl-35815841
The short exciton diffusion length (LD) associated with most classical organic photocatalysts (5-10 nm) imposes severe limits on photocatalytic hydrogen evolution efficiency. Here, a photovoltaic molecule (F1) without electron-deficient units at the central building block was designed and synthesized to improve the photoluminescence quantum yield (PLQY). With the enhanced PLQY of 9.3% and a large integral spectral overlap of 3.32 × 1016 nm4 M-1 cm-1, the average LD of F1 film increases to 20 nm, nearly twice the length of the control photovoltaic molecule (Y6). Then, the single-component organic nanoparticles (SC-NPs) based on F1 show an optimized average hydrogen evolution rate (HER) of 152.60 mmol h-1 g-1 under AM 1.5G sunlight (100 mW cm-2) illumination for 10 h, which is among the best results for photocatalytic hydrogen evolution.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos