Visible light-driven superoxide generation by conjugated polymers for organic synthesis

作     者：Feili Lai Yue Wang Dandan Li Xianshun Sun Juan Peng Xiaodong Zhang Yupeng Tian Tianxi Liu 

作者机构：Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai China Department of Chemistry Anhui University Hefei China State Key Laboratory of Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2018年第11卷第2期

页      面：1099-1108页

核心收录：

学科分类：0820[工学-石油与天然气工程] 080202[工学-机械电子工程] 08[工学] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 082002[工学-油气田开发工程] 

基　　金：supported by the National Basic Research Program of China (973 Program) 国家自然科学基金 the Key Laboratory of Neutron Physics (CAEP) the Youth Innovation Promotion Association of CAS 

主　　题：visible light poly(3-hexylthiophene)(PHT) superoxide selective aerobic oxidation photocatalysis 

摘      要：Benefiting from their unique delocalized electronic structure, conjugated polymer-based semiconductors are widely applied in the fields of organic electronics, sensors, and biomedical applications. However, the photocatalytic properties of conjugated polymers have been seldom studied because of their unsuitable band structures. Herein, we creatively demonstrate that the band structures of conjugated polymers are strongly related to their degree of polymerization （DP）, offering an effective strategy for the design of metal-free photocatalysts with tunable light absorption properties. Taking poly（3- hexylthiophene） （PHT） as an example, we show that PHT nanofibers with a suitable DP are a novel visible light-driven photocatalyst, which can readily convert molecular oxygen into superoxide ions. Benefiting from the high selectivity of the generated superoxides, the PHT nanofibers display outstanding activity for the aerobic oxidation of amines into imines with nearly 100% conversion and selectivity. This study offers a new strategy for the design of advanced coniugated Dolvrner-based Dhotocatalvsts.