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Interlayer Surface Modification of Layered Perovskite HLaNb2O7·xH2O with Diol Compounds Possessing Ethylene Oxide Chains

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Abstract:

Grafting reactions between an n-decoxy derivative of ion-exchangeable layered perovskite HLaNb2O7·xH2O and polyethylene glycols (PEGs) with various molecular masses were investigated. X-ray diffraction analysis showed that a reflection corresponding to the interlayer distance of the n-decoxy derivative of HLaNb2O7·xH2O (2.73 nm) disappeared and that new diffraction lines ascribable to smaller interlayer distances, which increased with increases in the molecular mass of PEGs, appeared. The solid-state 13C CP/MAS NMR spectra of the products indicated that ethylene oxide chains were covalently bound to the interlayer surface of HLaNb2O7∙xH2O. The signal assignable the carbons bound to OH groups suggests that the grafting reactions for the formation of Nb-O-C bonds typically involve one of the terminal OH groups in PEGs.

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Periodical:

Key Engineering Materials (Volume 616)

Pages:

82-86

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.616.82

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Online since:

June 2014

Authors:

Shuihei Hotta*, Naokazu Idota, Yoshiyuki Sugahara

Keywords:

Inorganic-Organic Hybrid, Layered Perovskite, Polyethylene Glycol, Surface Modification

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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