Citation: Li Fu-You, Zheng Jie, Liu Ting-Ting, Jin Lin-Pei, Zhao Xin-Sheng, Guo Jian-Quan. Photochemistry and Photoelectrochemistry of Donor-π-acceptor Azo-methine Dyes*[J]. Acta Physico-Chimica Sinica, 2000, 16(09): 787-791. doi: 10.3866/PKU.WHXB20000906
“推拉”型希夫碱染料的光化学和光电化学性质
合成了一种光降解的两亲性希夫碱染料,(E)-N-十八烷基-2-[2-(4-N,N-二甲基氨基苯基)胺烯基]吡啶碘化物（PN2）,考察了它的成膜性能,并成功地应用LB膜技术将其转移到石英基片或ITO电极上形成单层膜.对其光化学和光电化学性质的研究表明：它是一个具有二阶非线性光学性质(SHG)和光电响应性质(PEC)的可降解有机染料. 化合物PN2单层LB膜的宏观二阶非线性系数为145.6pm•V－1.在含有0.1mmol•L－1氢醌的0.5mmol•L－1KCl电解质溶液中,无偏压时、500nm波长下,PN2-ITO电极的光电转化外量子产率为1.37％.
English
Photochemistry and Photoelectrochemistry of Donor-π-acceptor Azo-methine Dyes*
An amphiphilic azo-methine dye (E)- N- octadecyl- 2- [2- (4- N,N- dimethyl aminophenyl)azomethinyl] pyridinium iodide (PN2),was synthesized. The dye molecule was successfully transferred onto quartz (or ITO slides) by Langmiur- Blodgett (LB) technique. The study on its photochemical and photoelectrochemical properties indicates that the azo-methine dye is a photodegradable compound. And second- harmonic generation (SHG) and photoelectric conversion (PEC) properties for this dye were observed. Its is 145.6 pm•V - 1, and its quantum yield of photocurrent generation is 1.37％ in 0.5 mol•L－1 KCl solution containing 0.1 mmol•L－1 hydroquinone, degassed with N2 and at zero bias voltage (vs SCE).
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