Chiroptical inversion induced by sandwiching units in chiral polythiourethane.
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.
Nagai
Atsushi
A
Department of Polymer Science and Engineering, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan.
Ochiai
Bungo
B
Endo
Takeshi
T