PYRIDINIUM N-PHENOXIDE BETAINES AND THEIR APPLICATION FOR THE CHARACTERIZATION OF SOLVENT POLARITIES .17. CHROMOIONOPHORIC PYRIDINIUM-N-PHENOLATE BETAINE DYES

被引：39

作者：

REICHARDT, C ^{[1
]}

ASHARINFARD, S ^{[1
]}

机构：

[1] UNIV MARBURG,WISSENSCH ZENTRUM MAT WISSENSCH,W-3550 MARBURG,GERMANY

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1991年 / 30卷 / 05期

关键词：

D O I：

10.1002/anie.199105581

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The halochromism of the crown-ether-substituted betaine dyes 1 is very sensitive to the cation size of the added electrolytes. The strongest hypsochromic shift of the longest-wavelength UV/VIS absorption results for n = 0 with Na+, n = 1 with K+, and n = 2 with Cs+: Thus, the dyes 1 may be useful as indicators.

引用

页码：558 / 559

页数：2

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