Title
Solution electrochemistry of indolenium squarylium cyanine dyesSolution electrochemistry of indolenium squarylium cyanine dyes
Author
Faculty/Department
Faculty of Sciences. Chemistry
Research group
Department of Chemistry
Structural chemistry group
Publication type
article
Publication
London,
Subject
Physics
Chemistry
Engineering sciences. Technology
Source (journal)
Dyes and pigments. - London
Volume/pages
42(1999):2, p. 113-116
ISSN
0143-7208
ISI
000080023000001
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The redox potential of a class of donor-acceptor-donor (D-A-D) molecules, bis(5-substituent-2,3,3,-trimethyl-indolenium-2-ylidene)squaraines (Sq 1-8), were determined. All the dyes exhibit two reversible oxidation potentials in methanol. C-5 substituents at the indolenium moieties exert a small effect on the first oxidation potential, and the substituent effect is attributed to the inductive parameters. The frontier orbital energy levels were calculated by the AM1-SCF method. A good linear relationship between the highest occupied molecular orbital energy level and the first oxidation potential was found. (C) 1999 Elsevier Science Ltd. All rights reserved.
E-info
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