TY - JOUR
T1 - Structures and dynamics of n-dodecyltrimethylammonium ions intercalated into sodium octosilicate and tetrasilicicfluoromica
AU - Shinohara, Emi
AU - Yamauchi, Miho
AU - Ishimaru, Shin'ichi
AU - Ikeda, Ryuichi
PY - 2003/11/5
Y1 - 2003/11/5
N2 - 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.
AB - 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.
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U2 - 10.1088/0953-8984/15/43/009
DO - 10.1088/0953-8984/15/43/009
M3 - Article
AN - SCOPUS:0242573700
SN - 0953-8984
VL - 15
SP - 7253
EP - 7259
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 43
ER -