Kinetics of J-aggregation of a thiacarbocyanine dye in aqueous solution:: Novel aggregate mediated by alcohols and metal ions

被引：13

作者：

Chibisov, Alexander K.

Slavnova, Tatyana D.

Goerner, Helmut ^{[1
]}

机构：

[1] Max Planck Inst Bioanorgan Chem, D-45413 Mulheim, Germany

[2] Russian Acad Sci, Ctr Photochem, Moscow 119421, Russia

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 424卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2006.04.075

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：

The kinetics of formation of J-aggregates induced by mono-, di- and trivalent metal ions was studied for 3,3'-di(gamma-sulfopropyl)-5-methoxy-4',5'-benzo-9-ethylthiacarbocyanine in aqueous solution in the presence of organic solvents, e.g.. acetonitrile, where the rate is strongly decreased. A novel intermediate aggregate (I-aggregate) was observed, when a metal ion was added to the thiacarbocyanine dye in a mixture of water with alcohols. The I- and J-aggregates are formed front the dimers. The kinetics of formation of the I-aggregate depend on the concentrations of alcohol and metal ions and its decay matches the formation of the modified J-aggregate. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：307 / 311

页数：5

共 27 条

[21] The influence of inorganic salts and bases on the formation of the J-band in the absorption and fluorescence spectra of the diluted aqueous solutions of TDBC [J].