Chiroptical inversion induced by sandwiching units in chiral polythiourethane

Chem Commun (Camb). 2006 Apr 14:(14):1515-7. doi: 10.1039/b600417b. Epub 2006 Mar 6.

Abstract

Chiroptical behavior of a hydrogen-bond-regulated chiral polythiourethane segment was inversed by sandwiching sterically demanding segments in copolymers prepared by cationic ring-opening copolymerization of chiral cyclic thiourethanes derived from L-serine.