Near-infrared and Two-Wavelength Electrochromism Based on Nanocrystalline TiO2 Films Functionalized with Ruthenium-Amine Conjugated Complexes
作者单位：Institute of Chemistry Chinese Academy of Science
会议名称：《中国化学会第八届全国配位化学会议》
会议日期：2017年
学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
关 键 词：ruthenium electochromism near-infrared titanium dioxide electrochemistry
摘 要：Two cyclometalated ruthenium complexes 2[1] and 4 containing a redox-active amine substituent and three carboxylic acid groups were synthesized,where the ruthenium ion and the amine site was separated by a phenyl or biphenyl bridge for 2 and 4,*** TiO films on FTO/glass substrates anchored with 2 or 4 were *** films display two consecutive anodic waves in the potential region between +0.1 and +1.0 V vs Ag/*** four organic solvents examined,the FTO/TiO/2 film displays the best cyclic electrochemical stability in ClCH CH *** films exhibit promising two-step electrochromism in the NIR region.A contrast ratio(T%) of 42%at 1000 nm and 40%at 680 nm was achieved for the FTO/TiO/2 film in the single-and doubleoxidation process,*** contrast,the FTO/TiO/4 film shows electrochromism at 1300 nm(□ T%= 58%)and 780 nm(T%= 59%) in the single-and double-oxidation process,*** coloration efficiency of these processes varies in a range of 150-270 cm/*** conduction mechanism of these films is believed to be dominated by lateral hopping processes,with partial involvement of the valence band of TiO in the doubleoxidation *** films are potentially useful as variable optical attenuators for telecommunications.