| 半花菁LB膜的时间分辨荧光研究 |
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| 引用本文： | 韩奎,陆兴泽,徐建华,马世红,王文澄,蔡志岗,周建英.半花菁LB膜的时间分辨荧光研究[J].光谱学与光谱分析,1999,19(3):264-267. |
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| 作者姓名： | 韩奎 陆兴泽 徐建华 马世红 王文澄 蔡志岗 周建英 |
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| 作者单位： | 1. 三束材料改性国家重点实验室,复旦大学物理系
2. 超快速激光光谱学国家重点实验室,中山大学 |
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| 摘 要： | 利用紫外－可见吸收，稳态和时间分辨荧光等方法研究了半花菁与花生酸交替Ｙ型ＬＢ膜中分子聚集体的性质；吸收光谱和稳态荧光光谱峰位的蓝移说明ＬＢ膜中Ｈ聚集体的存在。从荧光衰工线得到了聚集体的组份含量、大小和寿命。
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| 关 键 词： | LB膜 聚集体 半花菁 时间分辨荧光 |
Time-resolved Fluorescence Investigations of Aggregation in Langmuir-Blodgett Multilayers of Hemicyanine Dye |
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| Kui HAN,Xingze LU,Jianhua XU,Shihong MA,Wencheng WANG,Zhigang CAI,Jianying ZHOU.Time-resolved Fluorescence Investigations of Aggregation in Langmuir-Blodgett Multilayers of Hemicyanine Dye[J].Spectroscopy and Spectral Analysis,1999,19(3):264-267. |
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| Authors: | Kui HAN Xingze LU Jianhua XU Shihong MA Wencheng WANG Zhigang CAI Jianying ZHOU |
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| Institution: | State Key Joint Lab. for Materials Modification by Laser, Ion and Electron Beams, Department of Physics, Fudan University, 200433 Shanghai. |
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| Abstract: | 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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| Keywords: | Langmuir Blodgett films Aggregation Hemicyanine Time resolved fluorescence |
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