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A theoretical study of photoluminescence quenching in cis-polyacetylene

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Danielsen, P. L. and Ball, Robin (1985) A theoretical study of photoluminescence quenching in cis-polyacetylene. Journal de Physique, Vol.46 (No.10). pp. 1611-1622. doi:10.1051/jphys:0198500460100161100

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Official URL: http://dx.doi.org/10.1051/jphys:019850046010016110...

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Abstract

The non-radiative decay of photoinduced bond-alternation defects in cis-polyacetylene is considered within the SSH model [18]. The charge-conjugation symmetry of the simplest model Hamiltonian must be violated to explain the low photoluminescent yield (˜ 10-3 %) found experimentally. The simplest such route, that of electron-phonon coupling via second nearest-neighbour hopping is considered. It is found that a multiphonon process is required, the resulting decay rate being very sensitive to the parameters chosen. If this is the dominant non-radiative process, then it gives a potentially highly accurate method of determining the value of α, the nearest-neighbour electron-phonon coupling constant. The results for cis-polyacetylene can be generalized to give a qualitative understanding of photoluminescent properties of more complex conjugated molecules.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Photoluminescence, Electron-phonon interactions, Polymers
Journal or Publication Title: Journal de Physique
Publisher: Editions Physique
ISSN: 0302-0738
Official Date: 1985
Dates:
DateEvent
1985Published
Volume: Vol.46
Number: No.10
Page Range: pp. 1611-1622
DOI: 10.1051/jphys:0198500460100161100
Status: Peer Reviewed
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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