作者:Ainhoa Tolentino、Abdelilah Alla、Antxon Martínez de Ilarduya、Mercè Font-Bardía、Salvador León、Sebastián Muñoz-Guerra
DOI:10.1039/c3ra47049k
日期:——
that are known for their biological and medicinal properties. In the present work the thermal behavior of the homologous series of alkanoylcholine iodides with n = 12, 14, 16 and 18, has been examined within the 25–200 °C range of temperatures. Up to three thermotropic phases have been identified, and the thermal transitions implied in their interconversion have been characterized by DSC and simultaneous
由脂肪酸(n ACh)制备的长链烷酰胆碱是完全可持续的阳离子表面活性剂,以其生物学和药用特性而闻名。在目前的工作中,具有n的烷酰胆碱碘化物同系物的热行为在25–200°C的温度范围内检查了= 12、14、16和18。已鉴定出多达三个热致变相,并且通过DSC以及实时进行的同时WAXS和SAXS分析表征了相互转化中隐含的热转变。所有三个相均由双层结构组成,链烷酰基链被限制在头基层之间的空间中,并或多或少地相互交叉。这种过渡过程涉及多亚甲基链段或胆碱碘化物基团的熔融结晶。另外,从溶液中结晶时观察到也由双层结构组成但不包括侧链叉指的结晶相,并通过单晶X射线直接衍射法阐明了其结构。n已被证明。