Issue 7, 1990

Synthesis of solvatochromic cyanine dyes having a benzo[a]quinolizinium ring

Abstract

New stilbazolium cyanine-type dyes were synthesized by the base-catalysed aldol-type condensation of 2-methylbenzo[a]quinolizinium perchlorate with hydroxy-substituted benzaldehyde derivatives. The long wavelength absorption band of the deprotonated form of the dyes underwent a remarkable hypsochromic shift as the solvent polarity increased, and the pronounced negative solvato-chromism extended over the whole visible region.

Article information

Article type
Paper

J. Chem. Soc., Perkin Trans. 1, 1990, 1915-1917

Synthesis of solvatochromic cyanine dyes having a benzo[a]quinolizinium ring

S. Arai, K. Nagakura, M. Ishikawa and M. Hida, J. Chem. Soc., Perkin Trans. 1, 1990, 1915 DOI: 10.1039/P19900001915

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