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A theoretical study of photoluminescence quenching in cis-polyacetylene
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Danielsen, P. L. and Ball, R. C.. (1985) A theoretical study of photoluminescence quenching in cis-polyacetylene. Journal de Physique, Vol.46 (No.10). pp. 1611-1622. 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 |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of 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 |
| Date: | 1985 |
| Volume: | Vol.46 |
| Number: | No.10 |
| Page Range: | pp. 1611-1622 |
| Identification Number: | 10.1051/jphys:0198500460100161100 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/39406 |
Data sourced from Thomson Reuters' Web of Knowledge
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