SYNTHESIS AND PROPERTIES OF SQUARYLIUM CYANINE DYES CONTAINING N-ALKYL INDOLE

doi:10.7517/j.issn.1674-0475.1997.04.321

Abstract

Abstract: Seven squarylium indocyanine dyes with different N-alkyl group were synthesized. Their structures were confirmed by IR, ¹H NMR, MS spectroscopy and element analysis. Absorption spectra, melting points, solubilities and photofading were also studied. It was found that introducing squaric bridge in conjugated chain improved photostabilities. Influence of N-alkyl groups on λ_max were weak, but were great on solubilities and melting point. The group with branched chain on nitrogen atom having good solutilities was found.

Key words: cyanine dye, squaric acid, electronic absorption spectra, photostability, solubility

WANG Wei, YAO Zuguang. SYNTHESIS AND PROPERTIES OF SQUARYLIUM CYANINE DYES CONTAINING N-ALKYL INDOLE[J]. Imaging Science and Photochemistry, 1997, 15(4): 321-326.

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SYNTHESIS AND PROPERTIES OF SQUARYLIUM CYANINE DYES CONTAINING N-ALKYL INDOLE

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