物理化学学报 >> 2000, Vol. 16 >> Issue (09): 787-791.doi: 10.3866/PKU.WHXB20000906

研究论文 上一篇    下一篇

“推拉”型希夫碱染料的光化学和光电化学性质

李富友, 郑杰, 柳汀汀, 金林培, 赵新生, 郭建权   

  1. 北京师范大学化学系,北京 100875|北京大学稀土材料化学及应用国家重点实验室,北京 100871|北京大学化学系,北京 100871
  • 收稿日期:1999-12-13 修回日期:2000-01-20 发布日期:2000-09-15
  • 通讯作者: 金林培

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

摘要:

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%.

关键词: 希夫碱染料, LB膜, 二阶非线性光学性质, 光电响应性质

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)