ma8b00435_si_002.cif (352.08 kB)
Regio- and Stereoselective Polymerization of Diynes with Inorganic Comonomer: A Facile Strategy to Conjugated Poly(p‑arylene dihalodiene)s with Processability and Postfunctionalizability
dataset
posted on 2018-04-27, 18:22 authored by Qingqing Gao, Zijie Qiu, Mark R. J. Elsegood, Ming Chen, Jianguo Wang, Ryan T. K. Kwok, Jacky W. Y. Lam, Ben Zhong TangDevelopment of new methodologies
for synthesizing polymers with
novel structures and unique properties is a fundamentally important
area in polymer science. Herein, a novel synthetic strategy to conjugated
poly(p-arylene dihalodiene)s (PADs) with high regio-
and stereoselectivity was developed. In the presence of PdBr2 and CuBr2, the polymerizations of terminal alkynes proceeded
smoothly in air without heating to generate PADs in high yields (up
to 95.3%) with high molecular weights (Mw up to 915 900). Low-cost inorganic CuBr2 played
dual roles as cocatalyst and comonomer. The PADs possessed good solubility
and film-forming ability. Their thin films exhibited high refractive
indices (1.7149–1.7245) and would be fabricated into well-resolved
fluorescent photopatterns by photolithography. Thanks to the vinyl
bromine functionality, the PADs could undergo efficient postmodification
to afford polymers with more sophisticated structures and applications.