| Autor: |
Watfa N; Institut Lavoisier de Versailles, UMR 8180, University of Versailles, 45 Avenue des Etats-Unis, 78035 Versailles, France. sebastien.floquet@uvsq.fr mohamed.haouas@uvsq.fr., Floquet S, Terazzi E, Haouas M, Salomon W, Korenev VS, Taulelle F, Guénée L, Hijazi A, Naoufal D, Piguet C, Cadot E |
| Jazyk: |
angličtina |
| Zdroj: |
Soft matter [Soft Matter] 2015 Feb 14; Vol. 11 (6), pp. 1087-99. |
| DOI: |
10.1039/c4sm02551b |
| Abstrakt: |
A series of compounds resulting from the ionic association of a nanoscopic inorganic cluster of formula [K2NaxLiy{Mo4O4S4(OH)2(H2O)3}2(HzP8W48O184)]((34-x-y-z)-), 1, with several organic cations such as dimethyldioctadecylammonium DODA(+), trimethylhexadecylammonium TMAC16(+), alkylmethylimidazoliums mimCn(+) (n = 12-20) and alkyl-dimethylimidazoliums dmimCn(+) (n = 12 and 16) was prepared and characterized in the solid state by FT-IR, EDX, Elemental analysis, TGA and solid state NMR. The solid state NMR experiments performed on (1)H, (13)C and (31)P nuclei evidenced the interactions between the cations and 1 as well as the organization of the alkyl chains of the cations within the solid. Polarized optical microscopy, DSC and SA-XRD experiments implicated mesomorphic phases for DODA(+) and mimCn(+) salts of 1. The crystallographic parameters were determined and demonstrated that the inter-lamellar spacing could be controlled upon changing the length of the alkyl chain, a very interesting result if we consider the huge size of the inorganic cluster 1 and the simple nature of the cations. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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