Investigation of the photoelectric conversion of a novel molecule (E)-N-methyl-4-{2-[4-(dihexadecylamino)phenyl]ethenyl}pyridazinium iodide, in LB films fabricated on an SnO2 electrode

被引:26
作者
Cheng, TR [1 ]
Huang, CH [1 ]
Gan, LB [1 ]
机构
[1] BEIJING UNIV,STATE KEY LAB RARE EARTH MAT CHEM & APPLICAT,BEIJING 100871,PEOPLES R CHINA
关键词
D O I
10.1039/a606721b
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
An investigation of cathodic photocurrent response from a novel molecule with strong non-linear optical properties (second harmonic generation), (E)-N-methyl-4-{2-[4-(dihexadecylamino)phenyl]ethenyl}pyridazinium iodide (MHPd)in LB films on transparent SnO2 glass has been-carried out. A quantum yield of 0.3% was obtained under irradiation with 450 nm light in 0.5 mol dm(-3) KCl electrolyte solution and ambient conditions. The studies of the relationship between the light intensity and the cathodic photocurrent indicate that MHPd assemblies perform a unimolecular process in charge recombination. The effects of bias voltage, oxygen and nitrogen; electron donors and accepters such as methyl viologen diiodide, ascorbic acid and hydroquinone were examined and have provided supporting evidence for the proposed electron-transfer mechanism.
引用
收藏
页码:631 / 635
页数:5
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