Reducing the Exciton
Binding
Energy
of Donor–Acceptor‐Based Conjugated Polymers to Promote Charge‐Induced Reactions
ABCD PBi
Reducing the Exciton
Binding
Energy
of Donor–Acceptor‐Based Conjugated Polymers to Promote Charge‐Induced Reactions
Autor:
Lan, Zhi‐An
;
Zhang, Guigang
;
Chen, Xiong
;
Zhang, Yongfan
;
Zhang, Kai A. I.
;
Wang, Xinchen
Assuntos:
Binding
energy
;
Charge transfer
;
charge-transfer pathway
;
Chemical reduction
;
conjugated polymer
;
Current carriers
;
Electron transfer
;
Energy
charge
;
Energy
conservation
;
Energy
dissipation
;
Energy
loss
;
exciton
binding
energy
;
Excitons
;
Heat treating
;
hydrogen evolution
;
Irradiation
;
Light irradiation
;
Photocatalysis
;
Photochemicals
;
Polymers
;
Radiation
;
Thermodynamics
É parte de:
Angewandte Chemie International Edition, 2019-07, Vol.58 (30), p.10236-10240
Notas:
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição:
Exciton
binding
energy
has been regarded as a crucial parameter for mediating charge separation in polymeric photocatalysts. Minimizing the exciton
binding
energy
of the polymers can increase the yield of charge‐carrier generation and thus improve the photocatalytic activities, but the realization of this approach remains a great challenge. Herein, a series of linear donor–acceptor conjugated polymers has been developed to minimize the exciton
binding
energy
by modulating the charge‐transfer pathway. The results reveal that the reduced
energy
loss of the charge‐transfer state can facilitate the electron transfer from donor to acceptor, and thus, more electrons are ready for subsequent reduction reactions. The optimized polymer, FSO‐FS, exhibits a remarkable photochemical performance under visible light irradiation. Modulating the charge‐transfer pathway in a series of linear donor–acceptor conjugated polymers controls their ability to minimize the exciton
binding
energy
. A low exciton
binding
energy
promotes the photoreaction for artificial photosynthesis
Editor:
Germany: Wiley Subscription Services, Inc
Idioma:
Inglês