(Dialkylamino)thiazole dimers act as very strong electron-donating coupling components in azo dyes, the first and second UV–VIS absorption bands of which were observed at λ = 568–737 (ε = 24000–88000) and 404–475 (ε = 9200–52000) nm in dichloromethane, respectively. The azo compounds derived from the (dialkylamino)thiazole dimers having very strong electron-withdrawing moieties such as 4-(perfluoroalkylsulfonyl)phenyls
(二烷基
氨基)
噻唑二聚体是偶氮
染料中非常强的给电子耦合组分,在λ = 568–737(ε = 24000-88000)和404–475(ε时观察到其第一和第二个UV-VIS吸收带 分别在
二氯甲烷中= 9200–52000)nm。衍生自具有非常强的吸电子部分的(二烷基
氨基)
噻唑二聚体的偶氮化合物,例如4-(
全氟烷基磺酰基)苯基,2,4-
二硝基苯基和
噻唑-2-基,表现出负溶剂溶变色。这是中性偶氮
染料中负溶剂变色现象的第一个例子。