1H nuclear magnetic resonance study of mixed-valent dodecylamine-intercalated vanadium oxide nanosheets

Hyocheon Kweon, Kyu Won Lee, Cheol Eui Lee

Research output: Contribution to journalArticle

Abstract

Alkyl-chain dynamics in the mixed-valent dodecylamine-intercalated vanadium oxide nanosheets (C12VONS) was investigated by means of 400-MHz 1H nuclear magnetic resonance. Two C12VONS samples with distinct alkylammonium-to-alkylamine ratios showed distinct alkyl-chain dynamics, the alkylammonium chains being apparently more disordered than the alkylamine chains. The high-temperature spin-lattice relaxation is dominated by the conformational chain defects and the reorientational motions of the alkyl chains, respectively, in the alkylammonium-abundant system and in the alkylamine-abundant system. The reorientational and conformational changes of the alkyl chains appear to be uncorrelated with the magnetic transitions.

Original languageEnglish
Pages (from-to)1052-1056
Number of pages5
JournalSolid State Communications
Volume152
Issue number12
DOIs
Publication statusPublished - 2012 Jun 1

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Keywords

  • A. Mixed-valent dodecylamine-intercalated vanadium oxide nanosheets
  • D. Alkyl-chain dynamics
  • D. Phase transition
  • E. Nuclear magnetic resonance

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Chemistry

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