New Achiral Phenylacetylene Monomers Having an Oligosiloxanyl Group Most Suitable for Helix-Sense-Selective Polymerization and for Obtaining Good Optical Resolution Membrane Materials
作者:Lijia Liu、Yu Zang、Shingo Hadano、Toshiki Aoki、Masahiro Teraguchi、Takashi Kaneko、Takeshi Namikoshi
DOI:10.1021/ma101999k
日期:2010.11.23
higher than that of a poly(phenylacetylene) membrane having alkyl groups. This was because the polymers having oligosiloxane groups had high regularity of structures, i.e., chemical structures of the macromolecules such as one handedness and high order structures such as columnar contents in the membranes, and the membranes were flexible and had almost no defects. These good properties as optical resolution
为了开发更适合于螺旋正义选择性聚合(HSSP)的新型苯基乙炔单体,我们先前曾报道过,并且为了提高HSSP的效率和所得聚合物的膜性能,具有柔性低聚硅氧烷基(S n BDHPA)的新型苯基乙炔与通过使用手性催化体系合成和聚合了其他三个相关的单体系列,并研究了从所得手性聚合物中渗透膜的对映选择性。小号Ñ BDHPA是最适合HSSP和CD吸收(g ^聚值)(S ÑBDHPA)比相应的具有刚性烷基的聚合物更坚固,更稳定。可以通过溶剂浇铸法将聚合物制备成柔性的自支撑膜。另外,多(S n)之一的渗透的对映选择性BDHPA)膜比具有烷基的聚(苯乙炔)膜高得多。这是因为具有低硅氧烷基团的聚合物具有高规则性的结构,即膜的单手性等大分子的化学结构和膜中的柱状内容物等高阶结构,并且膜具有挠性并且几乎没有缺陷。这些优良的作为光学分辨率膜材料的特性是由低聚硅氧烷链的柔韧性,疏水性和膨松性引起的。发现具有三硅氧烷基的S