Spectral Sensitization of Poly-N-Vinylcarbazole with 3, 3'-Dicarbazolylphenylmethane Dyes

Abstract

We have studied new-type of sensitizing dyestuffs for PVK. We synthesized 12 kinds of 3, 3-dicarbazolylphenylmethane dyes and evaluated the properties of dyes such as visible absorption spectra, fastness to light and electrophotographic properties. Thus we confirmed that these dyes have many advantages as a sensitizer for PVK in comparison with other type of dye. Theyl satisfied the following conditions required for practically applicable sensitizer.
(1) high sensitizing effect
(2) faint coloring
(3) panchromatic spectral characteristic