Jump to main content
Jump to site search

Issue 30, 2008
Previous Article Next Article

Organic derivatives of the layered perovskite HLaNb2O7·xH2O with polyether chains on the interlayer surface: characterization, intercalation of LiClO4, and ionic conductivity

Author affiliations

Abstract

Polyether chains have been successfully grafted onto the interlayer surface of a Dion–Jacobson-type layered perovskite, HLaNb2O7·xH2O, by a reaction between an n-decoxy-derivative of HLaNb2O7·xH2O and CH3(OCH2CH2)mOH (1 ≤ m ≤ 4). After the reaction, the interlayer distance decreases from 2.73 nm to 1.58 (m = 1), 2.07 (m = 2), 2.28 (m = 3), and 2.69 (m = 4) nm. Solid-state 13C CP/MAS NMR spectroscopy indicates that the CH3(OCH2CH2)mO– groups are bound to the interlayer surface of HLaNb2O7·xH2O. The n-decoxy groups are completely removed by the reaction with CH3(OCH2CH2)mOH (m = 2 and 3), while a part of the n-decoxy groups remain after the reaction with CH3(OCH2CH2)mOH (m = 1 and 4). Upon treatment of the CH3(OCH2CH2)mO-grafted HLaNb2O7·xH2O (m = 2 or 3) with a CH3(OCH2CH2)mOH solution of LiClO4, the interlayer distance decreases further to 1.78 (m = 2) and 2.01 (m = 3) nm. Inductively coupled plasma emission spectrometry reveals the presence of lithium (0.22 (m = 2) and 0.24 (m = 3) per [LaNb2O7]). The presence of ClO4 ions is demonstrated by Raman spectroscopy, and the position of the ν1(A1) band indicates the presence of isolated ClO4 ions in the interlayer space. After treatment with a LiClO4 solution, CH3(OCH2CH2)mO-grafted HLaNb2O7·xH2O (m = 2 and 3) exhibits ionic conductivity, and no clear temperature dependence is observed.

Graphical abstract: Organic derivatives of the layered perovskite HLaNb2O7·xH2O with polyether chains on the interlayer surface: characterization, intercalation of LiClO4, and ionic conductivity

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Feb 2008, accepted on 16 May 2008 and first published on 27 Jun 2008


Article type: Paper
DOI: 10.1039/B802003E
Citation: J. Mater. Chem., 2008,18, 3581-3587
  •   Request permissions

    Organic derivatives of the layered perovskite HLaNb2O7·xH2O with polyether chains on the interlayer surface: characterization, intercalation of LiClO4, and ionic conductivity

    Y. Takeda, T. Momma, T. Osaka, K. Kuroda and Y. Sugahara, J. Mater. Chem., 2008, 18, 3581
    DOI: 10.1039/B802003E

Search articles by author

Spotlight

Advertisements