Conformational disorder and energy migration in MEH-PPV with partially broken conjugation

Grage, M. M. L., Wood, P. W., Ruseckas, A., Pullerits, T., Mitchell, W., Burn, P. L., Samuel, I. D. W. and Sundstrom, V. (2003) Conformational disorder and energy migration in MEH-PPV with partially broken conjugation. Journal of Chemical Physics, 118 16: 7644-7650. doi:10.1063/1.1562190

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Author Grage, M. M. L.
Wood, P. W.
Ruseckas, A.
Pullerits, T.
Mitchell, W.
Burn, P. L.
Samuel, I. D. W.
Sundstrom, V.
Title Conformational disorder and energy migration in MEH-PPV with partially broken conjugation
Journal name Journal of Chemical Physics   Check publisher's open access policy
ISSN 0021-9606
Publication date 2003
Sub-type Article (original research)
DOI 10.1063/1.1562190
Open Access Status File (Publisher version)
Volume 118
Issue 16
Start page 7644
End page 7650
Total pages 7
Place of publication Melville
Publisher American Institute of Physics
Language eng
Subject 03 Chemical Sciences
0306 Physical Chemistry (incl. Structural)
0904 Chemical Engineering
Abstract In order to obtain a better understanding of the role of conformational disorder in the photophysics of conjugated polymers the ultrafast transient absorption anisotropy of partially deconjugated MEH-PPV has been measured. These data have been compared to the corresponding kinetics of Monte Carlo-simulated polymer chains, and estimates of the energy hopping time and energy migration distances for the polymers have been obtained. We find that the energy migration in the investigated MEH-PPV is approximately 3 times faster than in previously studied polythiophenes. We attribute this to a more disordered chain conformation in MEH-PPV. (C) 2003 American Institute of Physics.
Keyword Physics, Atomic, Molecular & Chemical
Light-emitting-diodes
Long Polyene Chains
Excitation Transport
Polymers
Spectra
Absorption
Model
Poly(phenylenevinylene)
Dependence
Dynamics
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Wed, 19 Sep 2007, 15:02:49 EST