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Temperature dependence of the anisotropy of fluorescence in ring molecular systems

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18440%2F07%3A00001913" target="_blank" >RIV/62690094:18440/07:00001913 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Temperature dependence of the anisotropy of fluorescence in ring molecular systems

  • Original language description

    The time dependence of the anisotropy of fluorescence after an impulsive excitation in the molecular ring (resembling the B850 ring of the purple bacterium Rhodopseudomonas acidophila) is calculated. Fast fluctuations of the environment are simulated bydynamic disorder and slow fluctuations by uncorrelated static disorder. Without dynamic disorder modest degrees of static disorder are sufficient to cause the experimentally found initial drop of the anisotropy on a sub-100 fs time scale. In the presentinvestigation we are comparing results for the time-dependent optical anisotropy of the molecular ring for four models of the uncorrelated static disorder: Gaussian disorder in the local energies (model A), Gaussian disorder in the transfer integrals (model B), Gaussian disorder in radial positions of molecules (model C) and Gaussian disorder in angular positions of molecules (model D). Both types of disorder-static and dynamic-are taken into account simultaneously.

  • Czech name

    Teplotní závislost anizotropie fluorescence v prstencových molekulárních systémech

  • Czech description

    Bylo zkoumáno rozdělení energetické separace E(k=+-1) a relativní orientace dipólových momentů v prstenci B850 z purpurové bakterie Rhodopseudomonas acidophila. Byly porovnány čtyři typy nekorelovaného statického nepořádku: (A) Gaussovský nepořádek v lokálních excitačních energiích, (B) Gaussovský nepořádek v transfer integrálech, (C) Gaussovský nepořádek v radiálních posicích molekul, (D) Gaussovský nepořádek v úhlových posicích molekul. Je zahrnuta též možná eliptická deformace prstence. Naše výsledkyjsou korelovány s dostupnými experimentálními daty [C. Hofmann et. al., Chem. Phys. Lett. 395 (2004) 373].

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BE - Theoretical physics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA202%2F03%2F0817" target="_blank" >GA202/03/0817: Theoretical investigation of exciton dynamics on femtosecond time scale in circular antenna systems of photosyntetic purple bacteria</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Luminescence

  • ISSN

    0022-2321

  • e-ISSN

  • Volume of the periodical

    122-123

  • Issue of the periodical within the volume

    1-4

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    4

  • Pages from-to

    558-561

  • UT code for WoS article

  • EID of the result in the Scopus database