Single- and Double-Layered Organically Modified Nanosheets by Selective Interlayer Grafting and Exfoliation of Layered Potassium Hexaniobate

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-layere...

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Bibliographic Details
Published in:Langmuir 2014-02, Vol.30 (4), p.1169-1175
Main Authors: Kimura, Nanako, Kato, Yumi, Suzuki, Ryoko, Shimada, Akira, Tahara, Seiichi, Nakato, Teruyuki, Matsukawa, Kimihiro, Mutin, P. Hubert, Sugahara, Yoshiyuki
Format: Article
Language:English
Subjects:
Acetonitriles
Chemical Sciences
Material chemistry
Microscopy, Atomic Force
Nanostructures - chemistry
Nanostructures - ultrastructure
Niobium - chemistry
Organophosphorus Compounds - chemistry
Potassium Compounds - chemistry
Sonication
Spectroscopy, Fourier Transform Infrared
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Summary: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.
ISSN:0743-7463
1520-5827
DOI:10.1021/la404223x