Yoshihiko Watanabe, T. Aida, S. Inoue
May 1, 1990
Citations
0
Influential Citations
29
Citations
Journal
Macromolecules
Abstract
The polymerization of 1,2-epoxypropane in benzene using as initiator zinc N-methylated tetraphenylporphyrin complexes ((NMTPP)ZnSCH 2 CH 2 CH 3 (1b)) proceeded with immortal character in the presence of a protic compound such as 1-propanethiol or methanol to give the polymer of narrow molecular weight distribution with the number of the molecules corresponding to the sum of those of 1b and the protic compound. The polymerization of an episulfide, followed by an epoxide under visible light irradiation, afforded a block copolymer consisting of polythioether and polyether blocks of uniform block lengths Les polymeres obtenus ont des masses moleculaires controlees avec une distribution etroite. La propagation de la chaine a lieu dans la position axiale de l'amorceur, ou la photoexcitation du ligand porphirine peut augmenter remarquablement la reactivite des especes d'amorcage et de propagation liees a l'atome de zinc