Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (09): 787-791.doi: 10.3866/PKU.WHXB20000906

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Photochemistry and Photoelectrochemistry of Donor-π-acceptor Azo-methine Dyes*

Li Fu-You, Zheng Jie, Liu Ting-Ting, Jin Lin-Pei, Zhao Xin-Sheng, Guo Jian-Quan   

  1. Department of Chemistry,Beijing Normal University,Beijing 100875|State Key Laboratory of Rare Earth Materials Chemistry and Application,Peking University,Beijing 100871|Department of Chemistry,Peking University,Beijing 100871
  • Received:1999-12-13 Revised:2000-01-20 Published:2000-09-15
  • Contact: Jin Lin-Pei

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Abstract:

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).

Key words: Azo-methine dye, LB monolayer film, Second-harmonic generation(SHG), Photoelectric conversion(PEO)