Two dimensional size controlled confinement of poly(vinyl pyrrolidone) in the interlayer space of swelling clay mineral

Minoru Sohmiya, Shingo Omata, Makoto Ogawa

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    A water soluble polymer, poly(vinyl pyrrolidone) (PVP), was intercalated into the two dimensional interlayer space of a layered silicate, synthetic saponite (Sumecton SA; Kunimine Ind. Co.), which adsorbed rhodamine 6G (R6G) by ion exchange. The basal spacing was systematically controlled up to ca. 5 nm by the change of PVP to SA weight ratio. Depending on the expansion of the interlayer space, the luminescence self-quenching efficiency varied, possibly because of the distance between R6G, which directly correlated with the possibility of self-quenching. In addition, R6G degradation upon artificial sunlight irradiation was suppressed in the PVP-saponite system.

    Original languageEnglish
    Pages (from-to)1069-1074
    Number of pages6
    JournalPolymer Chemistry
    Volume3
    Issue number4
    DOIs
    Publication statusPublished - 2012 Apr

    ASJC Scopus subject areas

    • Polymers and Plastics
    • Organic Chemistry
    • Biochemistry
    • Biomedical Engineering
    • Bioengineering

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