The synthesis and reaction network of 2-styryl-1-benzopyrylium salts: An unexploited class of potential colorants

被引：31

作者：

Gomes, Raquel ^{[1
]}

Diniz, Ana M. ^{[1
]}

Jesus, Alexandre ^{[1
]}

Parola, A. Jorge ^{[1
]}

Pina, Fernando ^{[1
]}

机构：

[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, REQUIMTE, P-2829516 Caparica, Portugal

来源：

DYES AND PIGMENTS | 2009年 / 81卷 / 01期

关键词：

Flavylium; 2-Phenyl-1-benzopyrylium; 2-Styryl-1-benzopyrylium; Food colorants; Photochromism; STRUCTURAL TRANSFORMATIONS; AQUEOUS-SOLUTIONS; FLAVYLIUM; PHOTOCHROMISM; HYDRATION; SYSTEMS; KETONES;

D O I：

10.1016/j.dyepig.2008.09.007

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The syntheses, thermodynamic and kinetic properties of a series of 2-styryl-1-benzopyrylium compounds are reported. This family of compounds was found to follow the same pH- and light-dependent network of chemical reactions previously described for flavylium (2-phenyl-1-benzopyrylim) compounds. However, 2-styryl-1-benzopyrylium compounds exhibit absorption spectra substantially red shifted when compared with flavylium analogues (up to 90 nm). In particular, a photochromic system switching from yellow to light blue based on derivatives of natural anthocyanins is for the first time documented. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：69 / 79

页数：11

共 29 条

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