Triphenylene-Based Side Chain Liquid Crystalline Block Copolymers Containing a PEG block: Controlled Synthesis, Microphase Structures Evolution and Their Interplay with Discotic Mesogenic Orders
作者:Bin Wu、Bin Mu、Sai Wang、Junfei Duan、Jianglin Fang、Rongshi Cheng、Dongzhong Chen
DOI:10.1021/ma400655t
日期:2013.4.23
structures with the DLC matrix showing Ncol or ND mesophases. For copolymers with the highest fw,DLC around 90%, an overall ND phase was developed in sharp contrast to the ordered columnar phase formed by their corresponding DLC homopolymers, which was quite inspiring and might suggest another pathway of attaining this important nematic discotic phase through introducing a suitable copolymerized block
三苯撑(TP)衍生物是典型的,可能是研究最广泛的盘状液晶(DLC)材料。通过ATRP将TP液晶元与合成良好的聚(乙二醇)-b-聚(丙烯酸2-羟乙酯)(PEG-PHEA)进行类似的聚合物反应,得到了一系列定义明确的侧链DLC二嵌段共聚物PEG-poly (TPm)(m = 6或10),DLC嵌段重量分数(f w,DLC)为37%至90%,已成功制备,分子量分布窄(PDI≤1.11)。有趣的微相分离超结构演化以及整体形态与盘状介晶阶之间的相关性,其函数为f w,DLCDSC,POM和可变温度SAXS / WAXS的组合已经证明了温度和温度。具有较低DLC内容那些共聚物(˚F瓦特,DLC = 37%和43%),并在形成于PEG区域结晶变体周期和后行顺序级转变的层状结构在45℃下较低的温度和N的不同盘状中间相d或N col在约25°C时转变。对于中间体f w,DLC = 62%的共聚物,在高于35