Issue 4, 1996
From the journal:

Journal of Materials Chemistry

Synthesis and physical performance of indole and benzimidazole cyanine dyes

Zheng-Hong Peng,   Li Qun,   Xiang-Feng Zhou,   Suzanne Carroll,   Herman. J. Geise,   Bi-xian Peng,   Roger Dommisse  and  Robert Carleer  

Abstract

Nine indole and benzimidazole cyanine dyes, used as green-sensitizing dyes in photographic emulsions, are synthesized. The compounds are characterized from mass spectrometric and NMR spectroscopic data, and elemental analysis. FAB mass spectrometry proved to be an efficient method for determining the structure of the compounds. From UV–VIS data of the compounds the sensitizing properties of the cyanine dyes are predicted. The reflection spectrum of Gs2-9 coated in photographic emulsions showed J-aggregation behaviour at λ= 560 nm. Unsymmetric benzimidazole–indole cyanine dyes showed good to excellent green sensitizing properties in photographic emulsions, whereas symmetric indole cyanine dyes showed heavy residual colour and no sensitizing properties.

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Article information

DOI
https://doi.org/10.1039/JM9960600559
Article type
Paper

J. Mater. Chem., 1996,6, 559-565

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Synthesis and physical performance of indole and benzimidazole cyanine dyes

Z. Peng, L. Qun, X. Zhou, S. Carroll, Herman. J. Geise, B. Peng, R. Dommisse and R. Carleer, J. Mater. Chem., 1996, 6, 559 DOI: 10.1039/JM9960600559

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