Photochemistry in stilbene-containing monolayers. Part II: Effect of cation binding on photoisomerization

O. Karthaus, M. Hioki, M. Shimomura

    Research output: Contribution to journalConference articlepeer-review

    3 Citations (Scopus)

    Abstract

    A new stilbene-containing amphiphile with the chromophore in the hydrophilic headgroup was synthesized, and the photoisomerization of the stilbene sulfonate was investigated at the air-water interface. It could be shown that the isomerization leads to a decrease in area per molecule. The binding of inorganic and organic cations from the subphase occurs in the nanomolar concentration range. Binding was verified by UV and fluorescence spectroscopy and by electron spectroscopy for chemical analysis. Upon complexation with alkaline earth metals, the stilbene photoisomerization proceeds apparently faster, whereas organic cations of the viologen type quench the photoreaction. This is the first example of a control of photoisomerization in monolayers by cation complexation.

    Original languageEnglish
    Pages (from-to)181-188
    Number of pages8
    JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
    Volume126
    Issue number2-3
    DOIs
    Publication statusPublished - 1997 Jun 24
    EventProceedings of the 1996 4th Australia/Japan Symposium - Sorrento, Aust
    Duration: 1996 Apr 171996 Apr 21

    Keywords

    • Cation binding
    • Control of photoisomerization
    • Monolayer
    • Stilbene sulfonate
    • Trans-cis photoisomerization

    ASJC Scopus subject areas

    • Surfaces and Interfaces
    • Physical and Theoretical Chemistry
    • Colloid and Surface Chemistry

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