Time-resolved fluorescence investigations of aggregation in Langmuir-Blodgett multilayers of hemicyanine dye

被引：0
|
作者：
Han, K [1 ]
Lu, XZ
Xu, JH
Ma, SH
Wang, WC
Cai, ZG
Zhou, JY
机构：
[1] Fudan Univ, Dept Phys, State Key Joint Lab Mat Modificat Laser Ion & Ele, Shanghai 200433, Peoples R China
[2] Zhongshan Univ, Ultrafast Laser Spect Lab, Guangzhou 510275, Peoples R China
来源：
SPECTROSCOPY AND SPECTRAL ANALYSIS | 1999年 / 19卷 / 03期
关键词：
Langmuir-Blodgett films; aggregation; hemicyanine; time-resolved fluorescence;
D O I：
暂无
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
UV-visible absorption and steady-state and time-resolved fluorescence techniques were used to investigate the aggregation behavior in Y-type hemicyanine Langmuir-Blodgett (LB) multilayers. Hemicyanine molecules formed H aggregates in LB films leading to blue-shifts of the absorption and fluorescence bands with respect to those of monomeric hemicyanine in chloroform solutions. The aggregates in LB films were dissociated by mixing with arachidic acid. The measurement of fluorescence decay profiles could be used to quantitatively characterize the lifetime, weights and size of aggregates.
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页码：264 / 267
页数：4
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