Anharmonic Oscillator Approach to the Exciton‐Exciton Annihilation Dynamics in Molecular Aggregates
Identifieur interne : 000540 ( Main/Exploration ); précédent : 000539; suivant : 000541Anharmonic Oscillator Approach to the Exciton‐Exciton Annihilation Dynamics in Molecular Aggregates
Auteurs : T. Renger [États-Unis] ; V. May [Allemagne] ; V. Sundström [Suède] ; O. Kühn [Allemagne]Source :
- Journal of the Chinese Chemical Society [ 0009-4536 ] ; 2000-08.
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Abstract
The dynamics of Frenkel excitons in aggregates of coupled electronic three‐level molecules in the presence of strong external fields is investigated. Particular emphasis is paid to the microscopic inclusion of exciton‐exciton annihilation. It appears as a combination of exciton fusion and internal conversion processes which are taken into account within perturbation theory. The influence of an environment on the exciton dynamics is treated by means of stochastic fluctuations of the electronic transition energies. A closed set of equations of motion is derived and it is shown how nonlinear optical spectra can be calculated nonperturbatively.
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DOI: 10.1002/jccs.200000109
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Renger</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>California Institute of Technology, Caltech 127‐72, Pasadena, CA 91125</wicri:regionArea><wicri:noRegion>CA 91125</wicri:noRegion></affiliation></author><author><name sortKey="May, V" sort="May, V" uniqKey="May V" first="V." last="May">V. May</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institut für Physik, Humboldt University Berlin, Hausvogteiplatz 5‐7, 10117 Berlin</wicri:regionArea><placeName><region type="land" nuts="3">Berlin</region><settlement type="city">Berlin</settlement></placeName></affiliation></author><author><name sortKey="Sundstrom, V" sort="Sundstrom, V" uniqKey="Sundstrom V" first="V." last="Sundström">V. Sundström</name><affiliation wicri:level="1"><country xml:lang="fr">Suède</country><wicri:regionArea>Chemical Physics, Lund University, P.O. Box 124, 22100 Lund</wicri:regionArea><wicri:noRegion>22100 Lund</wicri:noRegion></affiliation></author><author><name sortKey="Kuhn, O" sort="Kuhn, O" uniqKey="Kuhn O" first="O." last="Kühn">O. Kühn</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institut für Chemie, Physikalische und Theoretische Chemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin</wicri:regionArea><placeName><region type="land" nuts="3">Berlin</region><settlement type="city">Berlin</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of the Chinese Chemical Society</title><title level="j" type="abbrev">Jnl Chinese Chemical Soc</title><idno type="ISSN">0009-4536</idno><idno type="eISSN">2192-6549</idno><imprint><publisher>WILEY‐VCH Verlag</publisher><pubPlace>Weinheim</pubPlace><date type="published" when="2000-08">2000-08</date><biblScope unit="volume">47</biblScope><biblScope unit="issue">4A</biblScope><biblScope unit="page" from="807">807</biblScope><biblScope unit="page" to="819">819</biblScope></imprint><idno type="ISSN">0009-4536</idno></series><idno type="istex">0CA9127A3CD74637E91C4BF5EB0ED180CA168C62</idno><idno type="DOI">10.1002/jccs.200000109</idno><idno type="ArticleID">JCCS200000109</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0009-4536</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Exciton annihilation</term><term>Frenkel excitons</term><term>Molecular aggregates</term><term>Nonlinear optics</term><term>photosynthesis</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The dynamics of Frenkel excitons in aggregates of coupled electronic three‐level molecules in the presence of strong external fields is investigated. Particular emphasis is paid to the microscopic inclusion of exciton‐exciton annihilation. It appears as a combination of exciton fusion and internal conversion processes which are taken into account within perturbation theory. The influence of an environment on the exciton dynamics is treated by means of stochastic fluctuations of the electronic transition energies. A closed set of equations of motion is derived and it is shown how nonlinear optical spectra can be calculated nonperturbatively.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Suède</li><li>États-Unis</li></country><region><li>Berlin</li></region><settlement><li>Berlin</li></settlement></list><tree><country name="États-Unis"><noRegion><name sortKey="Renger, T" sort="Renger, T" uniqKey="Renger T" first="T." last="Renger">T. Renger</name></noRegion></country><country name="Allemagne"><region name="Berlin"><name sortKey="May, V" sort="May, V" uniqKey="May V" first="V." last="May">V. May</name></region><name sortKey="Kuhn, O" sort="Kuhn, O" uniqKey="Kuhn O" first="O." last="Kühn">O. Kühn</name></country><country name="Suède"><noRegion><name sortKey="Sundstrom, V" sort="Sundstrom, V" uniqKey="Sundstrom V" first="V." last="Sundström">V. Sundström</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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