Structures and dynamics of n-dodecyltrimethylammonium ions intercalated into sodium octosilicate and tetrasilicicfluoromica

Emi Shinohara, Miho Yamauchi, Shin'ichi Ishimaru, Ryuichi Ikeda

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Structures and dynamics of n-dodecyltrimethylammonium ions intercalated into sodium octosilicate and tetrasilicicfluoromica were studied by powder x-ray diffraction, and 13C CP/MAS and 1H NMR measurements. In the octosilicate, cations form a 2D-crystalline state in which long axes of intercalated alkylammonium ions were shown to be inclined to silicate layers and polymethylene chains (-CH2-)n take the all-trans conformation. On the other hand, in the tetrasilicicfluoromica, cations form disordered arrangements with random conformations of alkyl-chains, considered to be in a 2D-amorphous state. Based on the NMR results, the dynamic behaviour of these ions in 2D space is discussed.

Original languageEnglish
Pages (from-to)7253-7259
Number of pages7
JournalJournal of Physics Condensed Matter
Volume15
Issue number43
DOIs
Publication statusPublished - Nov 5 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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