Reversible Interconversion between 11,11,12,12-Tetraaryl-1,4-diaza/-1,4,5,8-tetraazaanthraquinodimethanes and Their Cationic Species: Electrochromic and Halochromic Responses
作者:Takanori Suzuki、Yu Umezawa、Yuto Sakano、Hitomi Tamaoki、Ryo Katoono、Kenshu Fujiwara
DOI:10.1246/cl.150251
日期:2015.7.5
11,11,12,12-Tetrakis(4-methoxyphenyl)-1,4-diaza-2,3-diphenyl- and -1,4,5,8-tetraaza-2,3,6,7-tetraphenylanthraquinodimethanes (1 and 2) adopt a bent geometry. They undergo reversible redox interconversion with twisted dications 12+ and 22+, exhibiting a vivid change in color (electrochromism). Treatment with acid also induced drastic color change due to the formation of protonated species H-1+ and H-2+ (halochromism), thus demonstrating their two-way-input chromic behavior.
11,11,12,12-四(4-甲氧基苯基)-1,4-二氮杂-2,3-二苯基-和-1,4,5,8-四氮杂-2,3,6,7-四苯基蒽二甲烷(1 和 2)具有弯曲的几何形状。它们与扭曲的二阳离子 12+ 和 22+ 发生可逆的氧化还原相互转化,表现出鲜明的颜色变化(电致色性)。用酸进行处理也会因质子化物种 H-1+ 和 H-2+ 的形成而引起颜色的急剧变化(半色),从而证明了它们的双向输入色度行为。