Relationship between surface morphology and electroabsorption spectrum of an oxacyanine chromophore in a mixed Langmuir-Blodgett film

Nobuhiro Ohta, Mitsuhiro Nakamura, Iwao Yamazaki, Masatsugu Shimomura, Kuniharu Ijiro

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    Surface morphology of oxacyanine dye (OC) suddenly changes in mixed Langmuir-Blodgett films composed of OC, arachidic acid, and methyl arachidate when the OC fraction becomes more than 30 mol %. The agglomerates of OC show a ring structure just like a rubber band. The diameter and the shape of the "rubber band" change with different OC fractions, and microcrystalline domains appear when J-type aggregates are formed. The morphological change of the surface monolayer is well-correlated with a change in the electroabsorption spectra of the OC chromophore.

    Original languageEnglish
    Pages (from-to)6226-6230
    Number of pages5
    JournalLangmuir
    Volume14
    Issue number21
    DOIs
    Publication statusPublished - 1998 Oct 13

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Spectroscopy
    • Electrochemistry

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