Spectral sensitization of photoconductivity of poly(N-epoxypropylcarbazole) and benzaldehyde diphenylhydrazones by pyrylium dyes and their heteroanalogues

被引：0
|
作者：
N. S. Kobotaeva
E. V. Mikubaeva
E. E. Sirotkina
机构：
[1] Russian Academy of Sciences,Institute of Petroleum Chemistry, Siberian Division
来源：
High Energy Chemistry | 2007年 / 41卷
关键词：
Hydrazones; Ternary Complex; Electronic Absorption Spectrum; Spectral Sensitization; Complex Anion;
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学科分类号：
摘要：
The sensitizing activity of γ-pyrylocyanines and their heteroanalogues with respect to poly(N-epoxypropylcarbazole) and benzaldehyde diphenylhydrazones was studied. The influence of the dye anion and cation on its sensitizing ability was shown: the change in the sensitizing activity upon introducing a complex metal-containing anion into the dye molecule is due to a change in the donor-acceptor properties of the molecule and redistribution of the probabilities of excited-state deactivation processes. It was found that the maximum sensitization efficiency of pyrylium dyes was attained at the difference of 0.26–0.28 V between the electrochemical oxidation potentials of the sensitizer dye and the organic semiconductor.
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页码：255 / 260
页数：5
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