Why do flavylium salts show so various colors in solution? Effect of concentration and water on the flavylium's color changes

被引：25

作者：

Ito, F

Tanaka, N

Katsuki, A

Fujii, T ^{[1
]}

机构：

[1] Shinshu Univ, Fac Engn, Dept Environm Sci & Technol, Nagano 3808553, Japan

[2] Shinshu Univ, Fac Engn, Dept Chem & Mat Engn, Nagano 3808553, Japan

[3] Shinshu Univ, Dept Chem, Fac Educ, Nagano 3808544, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2002年 / 150卷 / 1-3期

关键词：

anthocyanin; three types of flavylium salts; color change of solution; dimerization and aggregation;

D O I：

10.1016/S1010-6030(02)00096-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

When synthesized flavylium salts (FVs) were allowed to stand in an acetonitrile-water mixture, the color of the solutions changed from yellow to red via green. This color change in FV solution has been studied by observing the change in UV-VIS absorption spectra. In particular, change in the color from green to red depends on the concentration of FV and an amount of water. The solution color, however, changed from red to green on dehydration of the solution. It is concluded that water molecules are responsible for the change in solution color from green to red and the change is due to dimerization and/or aggregation of FVs. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：153 / 157

页数：5

共 16 条

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BULLOW E, 2001, BER DTSCH CHEM GES, V34, P1782

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