文献类型：期刊文献

英文题名：Photoelectrochemical and electrochromic properties of polyimide/graphene oxide composites

作者：Ma, Lina[1];Niu, Haijun[1];Cai, Jiwei[1];Zhao, Ping[2];Wang, Cheng[1];Bai, Xuduo[1];Lian, Yongfu[1];Wang, Wen[3]

机构：[1]Heilongjiang Univ, Sch Chem & Chem Engn, Dept Macromol Mat & Engn, Key Lab Funct Inorgan Mat Chem,Minist Educ, Harbin 150086, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150080, Peoples R China

年份：2014

卷号：67

起止页码：488

外文期刊名：CARBON

收录：;EI(收录号：20140517241873);WOS:【SCI-EXPANDED(收录号:WOS:000329379300053)】；

基金：The authors are grateful to the support of the National Science Foundation of China (Grant No. 51373049, 51273056, 51372055, 21372067), Doctoral Fund of Ministry of Education of China, Foundation of Heilongjiang Education Bureau (Grant No. 12531504), Heilongjiang University Graduate-student Innovation Scientific Research Projects. Foundation of Heilongjiang University Innovator Group (No. hdtd-2010-11).

语种：英文

外文关键词：Graphene - Photoelectricity - Electrochromism - Scanning electron microscopy - Polyimides - High resolution transmission electron microscopy - Infrared devices - Work function - Electron transitions

摘要：A series of novel multicolored near-infrared electrochromic polyimide (PI)-based composites with graphene oxide (GO) were prepared by using in situ polymerization. The prepared PI/GO composites are readily soluble in many organic solvents, and display outstanding thermal resistance, stably electrochromic characteristics, high coloration efficiency, short switching time, and anodic electrochromic behavior. Scanning electron microscope and transmission electron microscopy showed a good and uniform dispersion of the GO sheets in the PI matrix. The surface of the composites contains hydrophilic functional groups such as C-O and C=O, which have been characterized by X-ray photoelectron spectroscopy. The typical, stable photoelectrical response showed that there was electron transfer in the interior of composites film under illumination, and the electrochemical impedance spectra result was consistent with the photoelectrical response. The different content of GO played a pivotal role in the electron transfer and regulated the conductivity of the composites. The work functions were obtained by KPFM measurements, and the work function is increasing with the contents increasing of GO in the composites. The properties prove that the composite is multipurpose material which will cater for photoelectric conversion and electrochromic application. (C) 2013 Elsevier Ltd. All rights reserved.