The effect of the amino group on the spectral properties of substituted styrylpyridinium salts

被引：23

作者：

Gawinecki, R ^{[1
]}

Trzebiatowska, K ^{[1
]}

机构：

[1] Tech & Agr Univ, Dept Chem, PL-85326 Bydgoszcz, Poland

来源：

DYES AND PIGMENTS | 2000年 / 45卷 / 02期

关键词：

styrylpyridinium salts; knoevenagel condensation; absorption spectra; amino groups; substituent effects; steric hindrance;

D O I：

10.1016/S0143-7208(00)00012-7

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Thirty-six trans-1-methyl-2- and -4-(p-aminostyryl)pyridinium perchlorates were obtained by the condensation of dimethylpyridinium salts with p-aminobenzaldehydes. In all cases, a strong absorption band was present in their UV/VIS spectra above 400 nm. The spectral parameters were not simply related to the substituent constants of the amino groups. A comparison with the respective styrylpyridinium iodides showed the anion to have no effect on the spectra. The 1-methyl-(p-aminostyryl)pyridinium salts prepared are expected to be useful materials in non-linear optics and in biological studies. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：103 / 107

页数：5

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