Iwasaki Tomokazu, Kohinata Yusaku, Nishide Hiroyuki
Department of Applied Chemistry, Waseda University, Tokyo 169-8555, Japan.
Org Lett. 2005 Mar 3;7(5):755-8. doi: 10.1021/ol047768z.
A novel helical aromatic polymer comprised of fused benzothiophene rings, poly(thiaheterohelicene), was synthesized via an intramolecular ring-closing reaction with a controlled helicity to one-sided bias. The synthetic helicity control involved the induction of the helical conformation and its fixation. The ladder polymer showed both an extended pi-conjugation and planarity and a very stiff helical structure. [structure: see text]
一种由稠合苯并噻吩环组成的新型螺旋芳香聚合物，聚（硫杂异螺旋烯），通过分子内环化反应合成，其螺旋度可控，偏向一侧。合成的螺旋度控制涉及螺旋构象的诱导及其固定。梯形聚合物既表现出扩展的π共轭和平面性，又具有非常刚性的螺旋结构。[结构：见正文]
