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DOI	10.1016/j.scib.2020.08.009
	Forming electron traps deactivates self-assembled crystalline organic nanosheets toward photocatalytic overall water splitting
	Wang L.; Liu J.; Wang H.; Cheng H.; Wu X.; Zhang Q.; Xu H.
发表日期	2021
ISSN	20959273
起始页码	265
结束页码	274
卷号	66 期号:3
英文摘要	Most biological photoredox reactions occur in sophisticated molecular assemblies consisting of highly organized light-harvesting moieties and catalytic centers. Mimicking these prototypes by creating supramolecular assemblies could be a potentially viable approach toward artificial photosynthesis. Although self-assembled organic materials are known to carry out water splitting reactions, developing self-assembled organic materials for photocatalytic overall water splitting still remains a critical challenge. Herein, we first demonstrate that crystalline organic nanosheets assembled from linear oligo(phenylene butadiynylene) (OPB) are able to catalyze overall water splitting under visible light irradiation. Further investigations reveal that the photocatalytic activity of self-assembled organic structures is closely related to the crystalline structure along with the corresponding electronic structure. Structural disorders in OPB nanosheets and extrinsic factors such as adsorbed water molecules will induce the formation of electron traps which can make the OPB nanosheets thermodynamically unfavorable for photocatalytic overall water splitting. The deactivation mechanism unveiled in this study provides crucial insights into the assembling of artificial organic materials for future solar-to-chemical energy conversion. © 2020 Science China Press
关键词	Conjugated polymers Deactivation Photocatalysis Self-assembly Water splitting
英文关键词	Artificial photosynthesis; Electron traps; Electronic structure; Energy conversion; Light; Molecules; Nanosheets; Photocatalytic activity; Solar energy; Critical challenges; Crystalline structure; Deactivation mechanism; Photoredox reactions; Structural disorders; Supramolecular assemblies; Visible-light irradiation; Water splitting reactions; Nanocrystalline materials
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207592
作者单位	Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China; Hefei National Laboratory for Physical Sciences at the Microscale, Synergetic Innovation Center of Quantum Information and Quantum Physics, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China
推荐引用方式 GB/T 7714	Wang L.,Liu J.,Wang H.,et al. Forming electron traps deactivates self-assembled crystalline organic nanosheets toward photocatalytic overall water splitting[J],2021,66(3).
APA	Wang L..,Liu J..,Wang H..,Cheng H..,Wu X..,...&Xu H..(2021).Forming electron traps deactivates self-assembled crystalline organic nanosheets toward photocatalytic overall water splitting.Science Bulletin,66(3).
MLA	Wang L.,et al."Forming electron traps deactivates self-assembled crystalline organic nanosheets toward photocatalytic overall water splitting".Science Bulletin 66.3(2021).