Premium
Facile and Versatile Synthesis of End‐Functionalized Poly(phenylacetylene)s: A Multicomponent Catalytic System for Well‐Controlled Living Polymerization of Phenylacetylenes
Author(s) -
Taniguchi Tsuyoshi,
Yoshida Takumi,
Echizen Kensuke,
Takayama Kokoro,
Nishimura Tatsuya,
Maeda Katsuhiro
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202000361
Subject(s) - phenylacetylene , catalysis , polymerization , chemistry , polymer chemistry , living polymerization , combinatorial chemistry , organic chemistry , radical polymerization , polymer
A rhodium‐based multicomponent catalytic system for well‐controlled living polymerization of phenylacetylenes has been developed. The catalytic system is composed of readily available and bench‐stable [Rh(nbd)Cl] 2 , aryl boronic acid derivatives, diphenylacetylene, 50 % aqueous KOH, and PPh 3 . This system offers a method for the facile and versatile synthesis of various end‐functionalized cis ‐stereoregular poly(phenylacetylene)s because components from aryl boronic acids and diphenylacetylene were introduced to the initiating end of the polymers. The polymerization reaction shows a typical living nature with a high initiation efficiency, and the molecular weight of the resulting poly(phenylacetylene)s can be readily controlled with very narrow molecular‐weight distributions ( M w / M n =1.02–1.09). The experimental results suggest that the present catalytic system has a higher polymerization activity than the polymerization activities of other rhodium‐based catalytic systems previously reported.