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The influence of N-alkyl groups on the properties of squarylium cyanine dyes

journal contribution
posted on 1998-12-01, 00:00 authored by Tong Lin, B Peng
Dyes with strong intermolecular interactions often exhibit low solubility, which restricts their application in some areas. Solubility can be improved by introducing substituent groups with a steric hindrance capacity. By enlarging the intermolecular distance, the interaction can be reduced, and so the solubility is higher. In this report, bis(2,3,3-trimethylindolenium-2-ylidene) squaraines with different branch chain alkyl groups on the nitrogen atom were synthesized and the relationship between substituents and solubility in different solvents, melting point and photophysical properties in solution are discussed.

History

Journal

Dyes and pigments

Volume

39

Issue

4

Pagination

201 - 209

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0143-7208

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1998, Elsevier Science Ltd.

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