含两个羟基取代基的苯乙炔衍生物的螺旋选择性共聚合研究

Helix-Sense-Selective Copolymerization of Phenylacetylene Derivatives Having two Hydroxyl Groups

文章通过螺旋选择性共聚合成功制备了三种新型含有两个羟基取代基的苯乙炔单手性螺旋共聚物。共聚物的产率高达75.5%～98.6%,分子量超过0.410×10^5,是一种成膜性极佳的共聚物。通过改变共聚单体中两组分的投料比,制备了一系列手性递增的共聚物（圆二色谱（CD）吸收峰强度增加）。其中,两个羟基与苯环之间的间隔链较短的苯乙炔单体（DO）与间隔较长的苯乙炔单体（EO）的摩尔比为90∶10时,共聚物的产率（98.6%）和分子量（2.47×10^6）最高,手性最强。可以用于手性拆分及气体分离。

In the paper, three novel one-handed helical copoly（phenylacetylene）s having two hydroxyl groups were successfully synthesized by helix-sense-selective polymerization. The resulting copolymers showed high yields （75.5 %～98.6 %） and high molecular weight more than 0.410×10^5. The membrane forming ability of the resulting copolymers were excellent. A series of copolymers were synthesized which chirality increased by changing the ratio of the two components monomers in feed. Among them, the molar ratio of the monomer （DO） having two hydroxyl groups via short spacers between the two hydroxyl groups and benzyl group and the monomer （EO） via longer spacers was 90 ： 10, the yield （98.6 %） and the molecular weight （2.47×10^6） of copolymer was the highest and the one-handed helicity of the copotymer was the strongest. The resulting copolymers are expected to be used as chiral resolution and gas separation membrane.