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.
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页码：307 / 311
页数：5
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