| 纳米混合分子聚集体材料中弗兰克尔激子迁移的相位弛豫 |
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| 引用本文： | 刘俊业,郑植仁.纳米混合分子聚集体材料中弗兰克尔激子迁移的相位弛豫[J].光学学报,1997,17(5):39-544. |
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| 作者姓名： | 刘俊业 郑植仁 |
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| 作者单位： | [1]中国科学院长春物理所激发态物理开放实验室 [2]吉林大学物理系 |
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| 摘 要： | 在有机染料ＰＩＣ－１中引入其衍生物ａｚａＰＩＣ－Ｉ形成能量势垒，改变在混合分子聚集体中ＰＩＣ－Ｉ的Ｊ－聚集体的实体长度。用双调制外差检测的累积光子回波技术研究了相干弗兰克尔激子失相过程。观测到激子失相时间Ｔ２随ａｚａＰＩＣ－１克分子数的增大从６０ｐｓ变为２２４ｐｓ。
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| 关 键 词： | 纳米 聚集体 弗兰克尔激子 光子回波 有机染料 |
| 收稿时间： | 1996/5/1 |
Phase Relaxation of Frenkel Exciton Migration in the Nanostructure Mixed Molecular Aggregates |
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| Liu Junye a Zheng Zhiren b Liu Chunxu Dou Kai a Huang Shihua a Yu Jiaqi a a,Laboratory of Excited State Processes,Changchun Institute of Physics,The Chinese Academy of Sciences,Changchun b.Phase Relaxation of Frenkel Exciton Migration in the Nanostructure Mixed Molecular Aggregates[J].Acta Optica Sinica,1997,17(5):39-544. |
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| Authors: | Liu Junye a Zheng Zhiren b Liu Chunxu Dou Kai a Huang Shihua a Yu Jiaqi a a Laboratory of Excited State Processes Changchun Institute of Physics The Chinese Academy of Sciences Changchun b |
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| Institution: | Liu Junye a Zheng Zhiren b Liu Chunxu Dou Kai a Huang Shihua a Yu Jiaqi a a,Laboratory of Excited State Processes,Changchun Institute of Physics,The Chinese Academy of Sciences,Changchun 130021 b,Department of Physics,Jilin Uni |
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| Abstract: | Energy barriers were formed in PIC Ⅰ dye doped with azaPIC Ⅰ changing the physical sizes of PIC Ⅰ J aggregates. Dephasing processes of coherent Frenkel excitons were studied using accumulated photon echo with double modulation and heterodyne detection technique. The lengthening of dephasing time T 2, from 60 ps to 224 ps, were observed with increasing the molar fractions of azaPIC Ⅰ. It is contrary to the shortening of T 2 in the mixed aggregates with traps. The coherence lengths of excitons in the mixed aggregates were investigated theoretically and experimentally. |
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| Keywords: | mixed molecular aggregate dephasing of Frenkel exciton accumulated photon echo |
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