Molecular Engineering of Fully Conjugated sp2 Carbon-Linked Polymers for High-Efficiency Photocatalytic Hydrogen Evolution - Details

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Abstract：

The　diverse　nature　of　organic　precursors　offers　a　versatile　platform　for　precisely　tailoring　the　electronic　properties　of　semiconducting　polymers.　In　this　study,　three　fully　conjugated　sp2　carbon-linked　polymers　have　been　designed　and　synthesized　for　photocatalytic　hydrogen　evolution　under　visible-light　illumination,　by　copolymerizing　different　C3-symmetric　aromatic　aldehydes　as　knots　with　the　1,4-phenylene　diacetonitrile　(PDAN)　linker　through　a　C=C　condensation　reaction.　The　hydrogen　evolution　(HER)　is　achieved　at　a　maximum　rate　of　30.2　mmol　g−1　h−1　over　a　polymer　based　on　2,4,6-triphenyl-1,3,5-triazine　units　linked　by　cyano-substituted　phenylene,　with　an　apparent　quantum　yield　(AQY)　of　7.20　%　at　420　nm.　Increasing　the　degree　of　conjugation　and　planarity　not　only　extends　visible-light　absorption,　but　also　stabilizes　the　fully　conjugated　sp2-carbon-linked　donor–acceptor　(D–A)　polymer.　Incorporating　additional　electron-withdrawing　triazine　units　into　the　D–A　polymer　to　form　multiple　electron　donors　and　acceptors　can　greatly　promote　exciton　separation　and　charge　transfer,　thus　significantly　enhancing　the　photocatalytic　activity.　©　2019　Wiley-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim

Keyword：

conjugation; donor–acceptor systems; hydrogen evolution; photocatalysis; polymers

Community：

[ 1 ] [Huang, T.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 2 ] [Lin, X.]Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
[ 3 ] [Liu, Y.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 4 ] [Zhao, J.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 5 ] [Lin, H.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 6 ] [Xu, Z.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 7 ] [Zhong, S.]Laboratory of Optics, Terahertz and Nondestructive Testing, School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, 350108, China
[ 8 ] [Zhang, C.]Research Institute of Air Purification Equipment, Shanxi Xinhua Chemical Co., Ltd, Taiyuan, 030008, China
[ 9 ] [Wang, X.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 10 ] [Fu, X.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
[ 11 ] [Long, J.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, China

Reprint 's Address：

[Lin, H.]State Key Lab of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou UniversityChina

Email：

linhuan360502@163.com

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Source ：

ChemSusChem

ISSN： 1864-5631

Year： 2020

Issue： 4

Volume： 13

Page： 672-676

8 . 9 2 8

JCR@2020

7 . 5 0 0

JCR@2023

ESI HC Threshold：160

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 32

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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