PubAg

Main content area

A bidirectional screw‐sense induction of poly(quinoxaline‐2,3‐diyl)s that depends on the degree of polymerization

Author:
Nagata, Yuuya, Nishikawa, Tsuyoshi, Terao, Ken, Hasegawa, Hirokazu, Suginome, Michinori
Source:
Journal of polymer science 2019 v.57 no.3 pp. 260-263
ISSN:
0887-624X
Subject:
composite polymers, cyclohexanes, polymerization, theoretical models
Abstract:
Poly(quinoxaline‐2,3‐diyl)s containing (S)‐3‐octyloxymethyl side chains with low degree of polymerization exhibited M‐helical conformations in cyclohexane, while the polymers with high low degree of polymerization adopt P‐helical conformations. This bidirectional screw‐sense induction can be rationalized based on a modified theoretical model, which includes the effect of the terminal groups. Furthermore, the authors also found that triblock copolymers that contain the chiral units either in the terminal groups or in the main chain adopted M‐ or P‐helical conformations, respectively.
Agid:
6268039