Electrochiroptical Response of 2,2‘-(2,2-Diarylethenyl)binaphthyl-Type Electron Donors That Undergo Reversible C−C Bond Formation/Breaking upon Two-Electron Transfer
作者:Hiroki Higuchi、Eisuke Ohta、Hidetoshi Kawai、Kenshu Fujiwara、Takashi Tsuji、Takanori Suzuki
DOI:10.1021/jo0345289
日期:2003.8.1
2-Bis(4-dimethylaminophenyl)ethenyl]biphenyl (1) is a strong electron donor that undergoes oxidative C-C bond formation to give a stable dication rac-2(2+), the 9,10-dihydrophenanthrene derivative substituted with two bis(4-dimethylaminophenyl)methylium chromophores. This dication salt regenerates the starting diolefin 1 by reductive C-C bond breaking, thus realizing a new electrochromic system with high
2,2'-[2,2-双(4-二甲基氨基苯基)乙烯基]联苯(1)是强电子给体,经过氧化CC键形成,可提供稳定的rac-2(2 +),9,10 -二氢菲衍生物被两个双(4-二甲基氨基苯基)甲基发色团取代。该指示盐通过还原性CC键断裂而使起始二烯烃1再生,从而实现了一种新的电致变色系统,该系统具有高电化学双稳态性,并且颜色从黄色变为深蓝色。类似地,在两电子转移时,双萘二烯烃rac-3和the烯型指示剂rac-4(2+)可相互转换。在光学纯的3和4(2+)之间进行电化学转变后,UV-vis和CD光谱都发生了巨大变化,这代表了一种新的电按摩系统。