Enhancement of second harmonic generation and photocurrent generation of   a novel stilbazolium dye dimer in Langmuir-Blodgett monolayer films

doi:10.1021/cm000472c

CORC > 北京大学 > 化学与分子工程学院

	Enhancement of second harmonic generation and photocurrent generation of a novel stilbazolium dye dimer in Langmuir-Blodgett monolayer films
	Li, FY ; Jin, LP ; Huang, CH ; Zheng, J ; Guo, JQ ; Zhao, XS ; Liu, TT
刊名	chemistry of materials
	2001
关键词	MODIFIED SNO2 ELECTRODES MODIFIED-ITO ELECTRODE 2ND-HARMONIC GENERATION
DOI	10.1021/cm000472c
英文摘要	A novel amphiphilic stilbazolium dye dimer, bis{[1-(N-methyl-4-pyridinium)-2-(4-N-methyl- N-hexadecylaminophenyl)]ethenyl}methanediiodide (C1BP) was synthesized, and (E)-N-methyl-4-[2-(4-N-methyl-N-hexadecylaminophenyl)ethenyl]pyridinium iodide (C1P) as a standard for comparison was also synthesized. They were successfully transferred onto the semiconducting transparent indium-tin oxide (ITO) or quartz as H-aggregates by the Langmuir-Blodgett (LB) technique. This centrosymmetric dimer (C1BP) can exhibit strong second-harmonic generation (SHG) by the LB method. The second harmonic susceptibility chi ((2)) of the monolayer film reaches 167 pm V-1 for C1BP and that for C1P is 125 pm V-1. The photoelectrochemistry of these dyes monolayer films was investigated in a traditional three-electrode cell. Steady cathodic photocurrent is obtained upon excitation of the dyes in LB films deposited on an ITO electrode. The observed photocurrent generation quantum yield strongly depended on the applied electrode potential, concentration of the redox couples in the electrolyte solution, and chemical structure of the dye congeners. The results show that the photocurrent generation property of the dimer is enhanced. The photocurrent generation quantum yield is 0.51% for C1BP, while that for C1P is 0.30%.; Chemistry, Physical; Materials Science, Multidisciplinary; SCI(E); 22; ARTICLE; 1; 192-196; 13
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/389032]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, FY,Jin, LP,Huang, CH,et al. Enhancement of second harmonic generation and photocurrent generation of a novel stilbazolium dye dimer in Langmuir-Blodgett monolayer films[J]. chemistry of materials,2001.
APA	Li, FY.,Jin, LP.,Huang, CH.,Zheng, J.,Guo, JQ.,...&Liu, TT.(2001).Enhancement of second harmonic generation and photocurrent generation of a novel stilbazolium dye dimer in Langmuir-Blodgett monolayer films.chemistry of materials.
MLA	Li, FY,et al."Enhancement of second harmonic generation and photocurrent generation of a novel stilbazolium dye dimer in Langmuir-Blodgett monolayer films".chemistry of materials (2001).