基于可聚合型表面活性剂自组装构建柱状液晶相结构的研究  

Research on constructing columnar liquid crystal phase structure based on self-assembly of polymerizable surfactant

作　　者：徐凤仙 吴晗宇 黄海瑞 尹世伟 赵宏庆 吴荣亮 Xu Fengxian;Wu Hanyu;Huang Hairui;Yin Shiwei;Zhao Hongqing;Wu Rongliang(College of Material Science and Engineering, Donghua University, Shanghai 201620, China)

机构地区：[1]东华大学材料科学与工程学院,上海201620

出　　处：《合成技术及应用》2021年第3期5-10,共6页Synthetic Technology & Application

摘　　要：研究了可聚合基团的引入对表面活性剂自组装形成六方柱状液晶相结构的影响。首先设计合成了一系列以季铵盐作为亲水头基,尾端连有丙烯酰氧基的可聚合型表面活性剂分子,分析了该系列表面活性剂与水复配后自组装形成的液晶相结构,利用偏光显微镜、X射线散射等技术探究分子结构与液晶相态之间的关系,并进一步研究了这些自组装结构在紫外光照引发聚合后的保真度。结果表明:所合成的可聚合型表面活性剂与水复配,可获得六方柱状相、层状相等相结构,其中,可聚合型双子表面活性剂PC11-6-11((11-甲基丙烯酰氧基)十一烷基-1,6-溴化乙二胺)所形成的六方柱状相结构在紫外光固化后相结构能得到完好保存。This paper studies the effect of the dating of polymerizable groups on the self-assembly of surfactants to form hexagonal columnar liquid crystal phase structure.We synthesized a series of polymerizable surfactant molecules with quaternary ammonium salt as the hydrophilic head group and acrylpyridine as the polymerizable group.We analyzed the liquid crystal phase structure formed by self-assembly of these surfactants with water.The relationship between the molecular structure and the liquid crystal phase state was explored under polarizing optical microscope and X-ray scattering.The results show that the surfactant with water is compounded to obtain hexagonal columnar and lamellar phases.Among them,the polymerizable gemini surfactant PC11-6-11((11-methylphenylhydroxy)undecyl-1,6-bromo ethylene diamine)has two polymerizable groups,the formed liquid crystal phase structure can be well preserved after UV crossing.

关 键 词：可聚合表面活性剂 溶致液晶 自组装 紫外光固化 

分 类 号：O647[理学—物理化学]