Color change of redox-active organometallic dithienylethene complexes by photochemical and redox processes

被引:7
作者
Li, Huifang [1 ]
Koike, Takashi [1 ]
Akita, Munetaka [1 ]
机构
[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
关键词
Dithienylethene; Photochromism; Redox reaction; Organo-iron complex; Organo-ruthenium complex; Mononuclear DTE complexes; PHOTOSWITCHABLE MOLECULAR WIRE; DIARYLETHENES; DTE; DERIVATIVES; RUTHENIUM; CHEMISTRY; BEHAVIOR;
D O I
10.1016/j.dyepig.2011.03.029
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Photochromic dithienylethene (DTE) derivatives, DTE-MCpL2 {M = Fe, Ru: Cp = eta(5)-cyclopentadienyl; L-2 = (CO)(2), (CO)PPh3, dppe (dppe = Ph2PCH2CH2PPh2)}, with a directly sigma-bonded, redox-active organometallic attachment have been prepared and their response to photo- and electrochemical stimuli has been investigated. It turns out that the color of the organometallic derivatives can be controlled not only by photochromic processes but also by one-electron redox processes. The Ru complexes 1(Ru) and 2(Ru) exhibit reversible photochromism in a manner similar to organic DTE derivatives, with ring closing and ring opening triggered by UV and visible-light irradiation, respectively. Their photochromic behavior is critically dependent on both of the central metal and ligands. One-electron oxidation of the Fe complex 3(Fe) gives the corresponding radical cationic species with a visible absorption. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:854 / 860
页数:7
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