Takeda Takashi, Akutagawa Tomoyuki
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , Sendai, Miyagi 980-8577, Japan.
J Org Chem. 2015 Feb 20;80(4):2455-61. doi: 10.1021/acs.joc.5b00021. Epub 2015 Feb 9.
The preparation, X-ray structure, and optoelectronic properties of bis(diarylmethylene)dihydrothiophene 1 and its π-extended analogues 2 are described. The development of a simple, short-step synthetic route allowed us to prepare derivatives with different aryl units. X-ray crystallographic analysis of 1b and 2b revealed their quinoidal structures, which exhibit strong electronic absorption in the visible region. Cyclic voltammetry measurements revealed their strong electron-donating properties. 1b showed two-step electrochromic behavior between the corresponding radical cation and dication.
描述了双（二芳基亚甲基）二氢噻吩1及其π-扩展类似物2的制备、X射线结构和光电性质。一条简单、短步骤的合成路线的开发使我们能够制备具有不同芳基单元的衍生物。对1b和2b的X射线晶体学分析揭示了它们的醌式结构，这些结构在可见光区域表现出强烈的电子吸收。循环伏安法测量揭示了它们很强的给电子性质。1b在相应的自由基阳离子和二价阳离子之间表现出两步电致变色行为。
