3-十二烷氧基-2-羟基丙基-三甲基溴化铵的晶体结构测定及性能表征  

CRYSTAL STRUCTURE DETERMINATION AND NATURE CHARACTERIZATION OF 3-DODECYLOXY-2-HYDROXYPROPYL TRIMETHYL AMMONIUM BROMIDE

作　　者：郭智慧[1] 侯婕[1] 赵怀华[1] 魏西莲[2,1] 

机构地区：[1]聊城大学化学化工学院,山东聊城252059 [2]山东省化学储能与新型电池技术重点实验室,山东聊城252059

出　　处：《井冈山大学学报（自然科学版）》2013年第2期32-36,共5页Journal of Jinggangshan University (Natural Science)

基　　金：国家自然科学基金项目(21073081);聊城大学实验技术研究项目;聊城大学化学化工学院教学专项(JX201004);聊城大学大学生科技文化创新项目(SRT11047HX2)

摘　　要：用脂肪醇与环氯丙烷在碱性条件下合成了季铵盐型阳离子表面活性剂。所得产品用X-射线单晶衍射法测定了晶体结构。该化合物采用双分子层结构,整个化合物由交叉的线性烷基链、季胺阳离子和溴离子组成。用偏光显微镜、差示扫描量热(DSC)技术研究了其液晶行为,证明该化合物为近晶相热致液晶。3-dodecyloxy-2-hydroxypropyl trimethyl ammonium bromide was synthesized with fatty alcohol and epichlorohydrin under alkaling condition. The crystal structure was determined by single crystal X-ray diffraction method. The crystal was formed by double molecular layers, consisted of crossing linear alkyl chains, quaternary amine cations and bromide ions. The liquid crystal properties were investigated by polarizing optical microscopy （POM） and differential scanning calorimetry （DSC）, which showed that the compounds were thermotropic smectic liquid crystals.

关 键 词：季铵盐阳离子表面活性剂 晶体结构 DSC X-射线单晶衍射 热致液晶 

分 类 号：Q641[生物学—生物物理学]