Mean-field theory of photoinduced molecular reorientation in azobenzene liquid crystalline side-chain polymers

T.G. Pedersen, P.M. Johansen

    Research output: Contribution to journalJournal articleResearch

    Abstract

    A novel mean-field theory of photoinduced reorientation and optical anisotropy in liquid crystalline side-chain polymers is presented and compared with experiments, The reorientation mechanism is based on photoinduced trans <-> cis isomerization and a multidomain model of the material is introduced. The theory provides an explanation for the high long-term stability of the photoinduced anisotropy as well as a theoretical prediction of the temporal behavior of photoinduced birefringence. The theoretical results agree favorably with measurements in the entire range of writing intensities used experimentally.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume79
    Issue number13
    Pages (from-to)2470-2473
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1997

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