Structure and Relaxation Characteristics, and Functionnalization of Liquid-Crystalline Glassy Materials Based on Mesomorphic Cholesterol Derivatives and Polysaccharides

本研究旨在阐明（a）胆固醇与脂肪胺的复合物和（B）高度取代的纤维素和甲壳素烷基酯的超分子结构和热和光学性质，两者形成液晶（LC）玻璃相。设计了基于其他相关衍生物的光学功能材料.胆固醇衍生物与脂肪族单胺的配合物：（1）研究了胆固醇邻苯二甲酸氢盐（CHP）或琥珀酸氢盐（CHS）与正构脂肪族单胺（Cn-胺）的1：1配合物形成的液晶玻璃的焓弛豫随胺组分碳数的变化。由CHIP或CHS和两种等摩尔的Cm-和Cn-胺的mCln组成的复杂混合物也用作LC玻璃样品。通过考虑氨基烷基链的长度分布的影响和各个LC玻璃中分子排列类型的差异进行了比较讨论。(2)离子 ...更多信息 发现CHS与含有光官能偶氮苯部分的胺化合物的络合物可应用于利用可逆各向异性-各向同性玻璃相转变的新记录系统.高度取代的纤维素和甲壳素烷基酯：完成了n = 4 - 20的纤维素三正酰基化物（Cn-ACell）和甲壳素二正酰基化物（Cn-ACh）的热转变方案。通过温控X射线衍射法，使DSC热分析观察到的多种介晶状态下的主干聚合物链和烷基侧链的排列更加清晰。3.纤维素和甲壳素的其他相关衍生物：以乙烯基单体为溶剂，通过光聚合，由纤维素和甲壳素衍生物的水溶液制备了膜状的聚合物复合材料，并研究了固体膜的手性光学性质。纤维素酯与乙烯基共聚物的一些可混溶的共混物被评价为作为双折射可控的光学介质的功能膜的适用性。少

The present research aimed at elucidating supramolecular structure and thermal and optical properties of (a) cholesteryl complexes with aliphatic amines and (b) highly substituted cellulose and chitin alkyl esters, both forming a liquid-crystalline (LC) glassy phase. Optically functional materials based on other related derivatives were also designed.1. Complexes of Cholesterol Derivatives with Aliphatic Monoamines:(1) Enthalpy relaxation of the LC glasses formed by 1:1 complex salts of cholesterol hydrogen phthalate (CHP) or succinate (CHS) with normal aliphatic monoamines (Cn-amine's) was studied as a function of the carbon number of the amine component. Complex mixtures composed of CHIP or CHS and two equimolar Cm- and Cn- amines of m≠n were also used as the LC glass samples. Comparative discussion was made by taking account of an effect of the distribution in length of the amino alkyl chain and a difference in the type of molecular arrangement in the respective LC glasses.(2) Ionic … More complexes of CHS with amine compounds containing a photo-functional azobenzene moiety were found to be applicable to a new recording system utilizing a reversible anisotroipic-isotropic glassy phase transition.2. Highly Substituted Cellulose and Chitin Alkyl Esters:Thermal transition schemes were completed for cellulose tri-normal acylates (Cn-ACells) and chitin di-normal acylates (Cn-ACh) of n=4-20. The arrangements of trunk-polymer chains and alkyl side-chains in the plural mesomorphic states observed by DSC thermal analysis were made clearer by a temperature-controlled X-ray diffractometry.3. Other Related Derivatives of Cellulose and Chitin:Polymer composites were prepared in film form from cholesteric LC solutions of cellulose and chitin derivatives via photo-polymerization of vinyl monomers as solvent, and the chiroptical properties of the solid films were investigated. Some miscible blends of cellulose esters with vinyl copolymers were evaluated for the applicability to functional films as a birefringence-controllable optical medium. Less