Forming electron traps deactivates self-assembled crystalline organic nanosheets toward photocatalytic overall water splitting

作     者：Lei Wang Jia Liu Haiyun Wang Hao Cheng Xiaojun Wu Qun Zhang Hangxun Xu 王磊;刘佳;王海云;程浩;武晓君;张群;徐航勋

作者机构：Hefei National Laboratory for Physical Sciences at the MicroscaleCAS Key Laboratory of Soft Matter ChemistryDepartment of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory for Physical Sciences at the MicroscaleSynergetic Innovation Center of Quantum Information and Quantum PhysicsDepartment of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory for Physical Sciences at the MicroscaleCAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and Engineeringand CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230026China 

基　　金：the National Key R&D Program of China(2017YFA0207301,2016YFA0200602,and 2018YFA0208702) the National Natural Science Foundation of China(21875235,21573211,and 21633007) the Anhui Initiative in Quantum Information Technologies(AHY090200) the China Postdoctoral Science Foundation(BX20200317) the Fundamental Research Funds for the Central Universities 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2021年第66卷第3期

页      码：265-274,M0004页

摘      要：Most biological photoredox reactions occur in sophisticated molecular assemblies consisting of highly organized light-harvesting moieties and catalytic *** these prototypes by creating supramolecular assemblies could be a potentially viable approach toward artificial *** 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 ***,we first demonstrate that crystalline organic nanosheets assembled from linear oligo(phenylene butadiynylene)(OPB)are able to catalyze overall water splitting under visible light *** investigations reveal that the photocatalytic activity of self-assembled organic structures is closely related to the crystalline structure along with the corresponding electronic *** 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 *** deactivation mechanism unveiled in this study provides crucial insights into the assembling of artificial organic materials for future solar-to-chemical energy conversion.

主 题 词：Self-assembly Water splitting Photocatalysis Conjugated polymers Deactivation 

学科分类：081702[081702] 081704[081704] 081705[081705] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/j.scib.2020.08.009

馆 藏 号：203981874...