来自超分子胍基烷磺酸盐的近晶型液晶。

Smectic liquid crystals from supramolecular guanidinium alkanesulfonates.

作者信息

Mathevet Fabrice, Masson Patrick, Nicoud Jean-François, Skoulios Antoine

机构信息

Institut de Physique et Chimie des Matériaux de Strasbourg, Groupe des Matériaux Organiques (CNRS UMR 7504), Université Louis Pasteur, 23 rue du Loess, 67034 Strasbourg Cedex 2, France.

出版信息

J Am Chem Soc. 2005 Jun 29;127(25):9053-61. doi: 10.1021/ja051312a.

DOI:10.1021/ja051312a

PMID:15969583

Abstract

The thermotropic polymorphism of a series of guanidinium alkanesulfonates (6 < or = n < or = 18) was investigated by optical microscopy and differential scanning calorimetry. Hydrogen bonding was analyzed by infrared spectroscopy. Molecular volumes were measured by dilatometry. The structure of the crystal, smectic A, and ordered smectic phases observed were studied by X-ray diffraction and utilized to prove that the supramolecular arrangement of the molecules in the crystal survives in the smectic phases at high temperature.

摘要

通过光学显微镜和差示扫描量热法研究了一系列链烷磺酸胍（6≤n≤18）的热致多晶型现象。通过红外光谱分析氢键。通过膨胀法测量分子体积。利用X射线衍射研究了所观察到的晶体、近晶A相和有序近晶相的结构，以证明晶体中分子的超分子排列在高温近晶相中得以保留。