本论文通过对长尾链型偶氮苯类液晶高分子的合成，以及对许多中间产物进行表

本论文通过对长尾链型偶氮苯类液晶高分子的合成，以及对许多中间产物进行表征。本文通过重氮反应、还原、氯化、醚化、酯化等反应，合成含偶氮苯类的长尾链目标单体。长尾链型液晶高分子由主链、柔性间隔基、液晶基元以及末端基四部分组成，其中的尾链长度对分子的液晶性的影响是本课题的主要研究方向。可以预见尾链本身的可能自组装现象对整个分子的相结构和液晶性有重要影响。因此在这个方向上进行设想进行的本实验，通过对羟基苯甲酸甲酯和溴代十八烷的合成、对羟基偶氮苯甲醇和十八烷氧基苄氯进行取代反应，最后合成出液晶高分子目标产物，并探究其液晶性。最后通过红外光谱、1H NMR对中间产物及目标单体的结构进行了表征。

关键词：液晶、侧链液晶高分子、偶氮苯

結果 (英文) 1:

This paper on the long tail-chain azobenzene liquid crystal polymer synthesis, as well as many intermediate representation. Based heavy nitrogen reaction and reduction, chloride, ether, esters, such as reactions, synthesis of azobenzene-containing tail chain monomers. Long-tail chain consists of main-chain type liquid crystalline polymers, flexible spacer, liquid crystal units and ends group consists of four parts, tail length on the effect of liquid crystal molecules is the subject of this study. Self-assembly phenomenon can foresee the tail of the chain itself may have important effects on the entire molecular structure and liquid crystallinity of. Therefore envisaged for this experiment in this direction, by p-hydroxybenzoic acid methyl ester and n-bromo-18 synthesis, methanol and p-hydroxy azobenzene 18 replaced by alkoxy benzyl chloride reaction, final synthesis of liquid crystalline polymer product and explore the crystalline state. Finally, IR, 1H NMR characterization of the product and the target structure of the monomer.Tags: LCD, side-chain liquid crystalline polymers, azobenzene

結果 (英文) 3:

This paper through the synthesis of long chain azobenzene liquid crystal polymer, and the characterization of many intermediate products. The through diazo reaction, reduction, chlorination, etherification, esterification reaction, synthesis of Azobenzene Containing class of long tail chain monomers. Long tail chain type liquid crystalline polymer by the backbone, flexible spacer, mesogenic units and end groups four part composition, wherein the tail chain length of molecular liquid crystal is the major research direction of this subject. It can be predicted that the possible self-assembly of the tail chain is important for the structure and liquid crystal of the whole molecule.. Thus, this experiment is carried out in this direction,Through the synthesis of p-hydroxybenzoic acid and methyl bromide on behalf of 18 alkyl, hydroxy azobenzene methanol and octadecyl oxygen benzyl chloride by substitution reaction, finally synthesizes liquid crystal polymer target product, and explore the liquid crystal. The structure of the intermediate products and target monomers was characterized by IR and NMR 1H.. Keywords: liquid crystal,


, azobenzene side chain liquid crystal polymer