Journal
ORGANIC LETTERS
Volume 7, Issue 5, Pages 755-758Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol047768z
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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.
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