An optically active polyradical was first synthesized by copolymerization of (4-ethynylphenyl)hydrogalvinoxyl and chiral acetylene monomer using Rh-catalyst. The circular dichroism spectrum of the polyradical showed a Cotton effect indicating the exess of one-handed helix backbone and the induced chirality of side-chain galvinoxyl units. Intermoleculer antiferromagnetic interaction observed for the polyradical was larger than that of the corresponding polyradical without excess of one-handed helix.
                                    通过使用 Rh 催化剂使 (4-ethynylphenyl)hydrogalvinoxyl 和手性
乙炔单体共聚,首次合成了一种具有光学活性的多级化合物。聚radical 的圆二色性光谱显示出 Cotton 效应,表明单手螺旋骨架的存在和侧链 galvinoxyl 单元的诱导手性。在这种多辐射体上观察到的分子间反
铁磁相互作用大于没有过量单手螺旋的相应多辐射体。