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设计并成功合成了一种含π-共轭平面取代基的苯乙炔单体,并通过核磁共振确定了单体的化学结构。以铑催化剂([Rh(nbd)Cl]2)为主催化剂,手性胺苯乙基胺((R)-PEA)为共催化剂的条件下对单体进行螺旋选择性聚合,成功制备了苯乙炔聚合物。通过凝胶渗透色谱测定了聚合物的分子量和分子量分布,并通过圆二色光谱图确定了聚合物具有单手性螺旋结构。
A kind of phenylacetylene monomer with π-conjugate plane substituent was designed and synthesized successfully. The chemical structure of the monomer was confirmed by NMR. The monomer was subjected to a helical selective polymerization using a rhodium catalyst ([Rh (nbd) Cl] 2) as a main catalyst and a chiral amine phenethylamine ((R) -PEA) as a cocatalyst. Acetylene polymers. The molecular weight and molecular weight distribution of the polymer were determined by gel permeation chromatography. The monodisperse helical structure of the polymer was confirmed by circular dichroism spectroscopy.