Tuning electronic state and charge transport in BN-containing 2D polymer heterostructures with efficient photocatalytic performance

doi:10.1002/smtd.202300409

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Title:	Tuning electronic state and charge transport in BN-containing 2D polymer heterostructures with efficient photocatalytic performance
Authors:	Binbin Wang, Xiao Wang, Bingbing Wang, Chung-Li Dong, Yu-Cheng Huang, Mengfei Yang, Yiming Liu, Yukun Zhu, Xiaojing Long, Dongjiang Yang, Yanzhi Xia
Date:	2023-06-14
Issue Date:	2024-07-30 12:05:39 (UTC+8)
Publisher:	Wiley-Blackwell
Abstract:	Linear-conjugated polymers (LCPs) are excellent semiconductor photocatalysts. However, its inherent amorphous structures and simple electron transport channels restrict efficient photoexcited charge separation and transfer. Herein, “2D conjugated engineering” is employed to design high-crystalline polymer photocatalysts with multichannel charge transport by introducing alkoxyphenyl sidechains. The electronic state structure and electron transport pathways of the LCPs are investigated using experimental and theoretical calculations. Consequently, the 2D B←N-containing polymers (2DPBN) exhibit excellent photoelectric characteristics, which enable the efficient separation of electron–hole and rapidly transfer photogenerated carriers to the catalyst surface for efficient catalytic reactions. Significantly, the further hydrogen evolution of 2DPBN-4F heterostructures can be achieved by increasing the fluorine content of the backbones. This study highlights that the rational design of LCP photocatalysts is an effective strategy to spur further interest in photofunctional polymer material applications.
Relation:	Small Methods 7(10), 2300409
DOI:	10.1002/smtd.202300409
Appears in Collections:	[Graduate Institute & Department of Electrical Engineering] Journal Article

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