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Investigation of intrachain exciton diffusion of MEH-PPV in solution with different polarity
HanzhuangZhang
Author NameAffiliationE-mail
HanzhuangZhang Femtosecond laser laboratory, College of Physics, Jilin University, Changchun 130012, China mengkun@tjpu.edu.cn 
Abstract:
Femtosecond time-resolved transient grating (TG) technique was adopted to insight into the intrachain exciton diffusion of MEH-PPV in solution with different polarity. Broadband white-light continuum was introduced as the probe to observe the transient absorption (TA) and the TG information simultaneously. The vibrational dephasing behaviors, single exciton relaxation, 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.
Key words:  transient grating, exciton diffusion, MEH-PPV
FundProject:
Investigation of intrachain exciton diffusion of MEH-PPV in solution with different polarity
HanzhuangZhang
摘要:
Femtosecond time-resolved transient grating (TG) technique was adopted to insight into the intrachain exciton diffusion of MEH-PPV in solution with different polarity. Broadband white-light continuum was introduced as the probe to observe the transient absorption (TA) and the TG information simultaneously. The vibrational dephasing behaviors, single exciton relaxation, 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.
关键词:  transient grating, exciton diffusion, MEH-PPV
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