Synthesis, structure, and UV-VIS absorption spectra of azo dyes derived from (dialkylamino)thiazole dimers

被引：21

作者：

Kim, JJ

Funabiki, K

Muramatsu, H

Shibata, K

Kim, SH

Shiozaki, H

Hartmann, H

Matsui, M ^{[1
]}

机构：

[1] Gifu Univ, Fac Engn, Dept Chem, Gifu 5011193, Japan

[2] Kyungpook Natl Univ, Coll Engn, Dept Dyeing & Finishing, Taegu 702701, South Korea

[3] Technol Res Inst Osaka Prefecture, Suita, Osaka 5640002, Japan

[4] Fachhsch Merseburg, Fachbereich Chem, D-06217 Merseburg, Germany

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 2001年 / 03期

关键词：

D O I：

10.1039/b006991o

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

(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 lambda = 568-737 (epsilon = 24000-88000) and 404-475 (epsilon = 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, 2,4-dinitrophenyl, and thiazol-2-yls exhibited a negative solvatochromism. This is the first example of a negative solvatochromism in neutral azo dyes.

引用

页码：379 / 387

页数：9

共 36 条

[1] Solvatochromic and halochromic properties of some phosphonioarylimino- and phosphonioarylazo-phenolate betaine dyes [J].