| 不同极性溶液中MEH-PPV链内激子扩散的研究 |
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| 引用本文： | 李雪璁,袁启霖,张 芳,张汉壮.不同极性溶液中MEH-PPV链内激子扩散的研究[J].化学物理学报,2019,32(2):273-276. |
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| 作者姓名： | 李雪璁 袁启霖 张 芳 张汉壮 |
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| 作者单位： | 天津工业大学应用物理系，天津 300387,吉林大学物理学院，长春 130012,天津工业大学应用物理系，天津 300387,吉林大学物理学院，长春 130012 |
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| 摘 要： | 本文采用飞秒时间分辨瞬态光栅技术研究了MEH-PPV在不同极性溶液中的内激子扩散行为. 采用宽带连续白光同时探测瞬态吸收和瞬态光栅信息. 系统地研究了MEH-PPV的振动失相行为以及单激子弛豫和粒子数弛豫动力学. 结果表明，在极性较大的溶剂中，样品溶液的弛豫扩散过程会加快.
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| 关 键 词： | 瞬态光栅，激子扩散，MEH-PPV |
| 收稿时间： | 2018/6/6 0:00:00 |
Investigation of Intrachain Exciton Diffusion of MEH-PPV in Solution with Different Polarity |
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| Xue-cong Li,Qi-lin Yuan,Fang Zhang and Han-zhuang Zhang.Investigation of Intrachain Exciton Diffusion of MEH-PPV in Solution with Different Polarity[J].Chinese Journal of Chemical Physics,2019,32(2):273-276. |
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| Authors: | Xue-cong Li Qi-lin Yuan Fang Zhang and Han-zhuang Zhang |
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| Institution: | Department of Physics, Tianjin Polytechnic University, TianJin 300387, China,Femtosecond laser laboratory, College of Physics, Jilin University, Changchun 130012, China,Department of Physics, Tianjin Polytechnic University, TianJin 300387, China and Femtosecond laser laboratory, College of Physics, Jilin University, Changchun 130012, China |
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| Abstract: | Femtosecond time-resolved transient grating technique was adopted to insight into the intra-chain exciton diffusion of MEH-PPV in solution with different polarity. Broadband white-light continuum was introduced as the probe to observe the transient absorption and the femtosecond time-resolved transient grating information simultaneously. The vibrational dephasing behaviors, single exciton relaxation, and population relaxation dynamics of MEH-PPV were systematically investigated. The result shows that the relaxation processes of the sample solution will be accelerated in the solvent with larger polarity. |
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| Keywords: | Transient grating Exciton diffusion Poly[2-methoxy-5-(2''-ethylhexoxy)]-1 4-phenylene vinylene |
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