Single- and double-layered organically modified nanosheets by selective interlayer grafting and exfoliation of layered potassium hexaniobate

Nanako Kimura, Yumi Kato, Ryoko Suzuki, Akira Shimada, Seiichi Tahara, Teruyuki Nakato, Kimihiro Matsukawa, P. Hubert Mutin, Yoshiyuki Sugahara

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    22 Citations (Scopus)

    Abstract

    Organically modified niobate nanosheets are promising building blocks for the design of advanced hybrid materials. Nanosheets with controlled thickness and surface composition are important for precise structural design of the nanosheet-based materials. In this work, single-layered and double-layered niobate nanosheets functionalized by phenylphosphonate moieties were selectively prepared by interlayer grafting of A-type and B-type intercalation derivatives of potassium hexaniobate (K4Nb6O17· 3H2O) with phenylphosphonic acid (PPA), followed by exfoliation by ultrasonication in acetonitrile. The interlayer grafting of PPA was monitored using X-ray diffraction (XRD), Fourier transform infrared (FTIR), and solid-state NMR spectroscopy, and the thicknesses of the exfoliated nanosheets were measured by atomic force microscopy (AFM). Transparent hybrid films were obtained by incorporating the single- and double-layered nanosheets into an epoxy matrix.

    Original languageEnglish
    Pages (from-to)1169-1175
    Number of pages7
    JournalLangmuir
    Volume30
    Issue number4
    DOIs
    Publication statusPublished - 2014 Feb 4

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    ASJC Scopus subject areas

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

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