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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 ISSN 0302-0738.
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Official URL: http://dx.doi.org/10.1051/jphys:019850046010016110...
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 | ||||
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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: |
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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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