✦ LIBER ✦

The Structure of Benzimidazole Cyanine Dyes, Their Spectroscopy and Their Performance in Photographic Emulsions

✍ Scribed by Peng, Zheng-Hong ;Geise, H. J. ;Zhou, Xiang-Feng ;Peng, Bi-Xian ;Carleer, R. ;Dommisse, R.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 672 KB
Volume: 1997
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.199719970107

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✦ Synopsis

Abstract

The multi‐step synthesis of two benzimidazole trimethine cyanines as possible green sensitizing dyes (Gs3‐1, Gs3‐2) is reported. Compounds were characterized from UV‐Vis, mass spectroscopic and NMR data. The charge density distributions of the two compounds, calculated using the semi‐empirical MOPAC 93 package, are in agreement with assignments in NMR spectroscopy. Sensitizing properties of the cyanine dyes were evaluated in actual photographic T‐grain emulsions.

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