Poly (thiaheterohelicene): a stiff conjugated helical polymer comprised of fused benzothiophene rings

T Iwasaki, Y Kohinata, H Nishide

Index: Iwasaki, Tomokazu; Kohinata, Yusaku; Nishide, Hiroyuki Organic Letters, 2005 , vol. 7, # 5 p. 755 - 758

Full Text: HTML

Citation Number: 51

Abstract

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 π- conjugation and planarity and a very stiff helical structure.