Investigation of Intrachain Exciton Diffusion of MEH-PPV in Solution with Different Polarity |
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| Authors: | Xue-cong Li Qi-lin Yuan Fang Zhang Han-zhuang Zhang |
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| Affiliation: | 1.Department of Physics, Tianjin Polytechnic University, TianJin 300387, China2.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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