Excited state dynamics of organic semi-conducting materials-Reference-Cited by-同舟云学术

Excited state dynamics of organic semi-conducting materials

Published:2015 Issue: Volume:177 Page:111-119
ISSN:1359-6640
Container-title:Faraday Discussions
language:en
Short-container-title:Faraday Discuss.

Author:

Ghiggino Kenneth P.¹²³⁴,Tilley Andrew J.¹²³⁴⁵,Robotham Benjamin¹²³⁴,White Jonathan M.¹²³⁴⁵

Affiliation:

1. School of Chemistry

2. University of Melbourne

3. Melbourne

4. Australia

5. Bio21 Molecular Science and Biotechnology Institute

Abstract

Time-resolved absorption and emission spectroscopy has been applied to investigate the dynamics of excited state processes in oligomer models for semi-conducting organic materials. Following the photo-excitation of a pentamer oligomer that is a model for the conjugated polymer MEH-PPV, an ultrafast component of a few picoseconds is observed for the decay of the initially formed transient species. Variable temperature absorption and emission spectra combined with X-ray crystallography and calculations support the assignment of this rapid relaxation process to an excited state conformational rearrangement from non-planar to more planar molecular configurations. The implications of the results for the overall photophysics of conjugated polymers are considered.

Publisher

Royal Society of Chemistry (RSC)

Subject

Physical and Theoretical Chemistry

Link

http://pubs.rsc.org/en/content/articlepdf/2015/FD/C4FD00171K

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