Compression of the dye monolayer at the air/water interface studied by second harmonic generation

Valeria Tsukanova, Oksana Slyadneva, Takanori Inoue, Akira Harata, Teiichiro Ogawa

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    9 Citations (Scopus)

    Abstract

    The second harmonic (SH) generation efficiency upon compression of insoluble rhodamine C18 and fluorescein O322 monolayers at the air/water interface has been measured. The SH intensity dependence on area per molecule clearly varied for four main regions: expanded monolayer, expanded-condensed transition region, condensed monolayer and collapse point. This SH intensity dependence was similar with the π-A isotherm for both molecules. The SH intensity change would be explained with a model of interactions of dye chromophores based on the dipole-dipole correlation, CH-π interaction, aggregates of electronic transition moments and formation of large order π-conjugated system.

    Original languageEnglish
    Pages (from-to)207-215
    Number of pages9
    JournalChemical Physics
    Volume250
    Issue number2
    DOIs
    Publication statusPublished - Dec 1 1999

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    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)
    • Physical and Theoretical Chemistry

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