【作者】 包晓玉； 邱东方； 王宏伟； 刘克成； 郭应臣；

【Author】 Xiaoyu Bao;Dongfang Qiu;Hongwei Wang;Kecheng Liu;Yingchen Guo;Department of chemistry, Nanyang Normal University;

【机构】 南阳师范学院化学与制药工程学院；

【摘要】 <正>本文采用化学合成的方法制备了一种新型功能配合物[Fe(L)2](PF6)2{L=4’-[4-(二苯胺基)苯基)]-2,2’:6’,2’’–三联吡啶},其结构和纯度经1H-NMR、13C-NMR和元素分析证实。在5.0×10-4 mol·L-1配合物单体溶液中,采用循环伏更多还原

【Abstract】 A donor-acceptor-donor(D-A-D) complex [Fe(L)2](PF6)2 {L = 4’-[4-(diphenylamino)phenyl)]-2,2’:6’,2’’-terpyridine} was synthesized and confirmed successfully. Its oxidative electropolymerization was conducted by continuous cycling of the working electrode potential from 0 to 1.8 V in 0.1 mol·L-1 Bu4 NCl O4/CH3 CN solution containing 5.0×10-4 mol·L-1 monomer. The purple hybrid polymer film, characterized by X-ray photoelectron spectroscopy(XPS), exhibited a non-diffusional charge transfer behaviour for Fe(III)/Fe(II) couple and an irreversibleredox process of triphenylamine moiety on the Pt working electrode, as well as high stability in monomer-free electrolytic solution. The film thickness was easily tuned by controlling the number of potential sweeping cycle, and the AC impedance of as-formed film increased with cycling number. Morphological characterization of the film on indium tin oxide(ITO) was provided by scan electron microscopy(SEM) and atomic force microscopy(AFM).The donor-acceptor(D-A) polymer film on ITO showed a broad and blue-shifted 1MLCT wave in the UV-vis spectrum and a clearly electrochromic behaviour from purple to colorless in the spectroelectrochemical study. The ?T % of the poly-[Fe(L)2]2+ film is found to be 26.4 % at 576 nm. The response required to attain 95% of total transmittance difference is found to be 0.9 s from the oxidized to the reduced state. The coloration efficiency of poly-[Fe(L)2]2+ film is measured as 223 cm2 /C(at 576 nm) at full doped state, These properties indicate that this polymer can be used as the electrochromic material.更多还原