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Preparation of microporous polymers in the form of particles and a thin film from hyperbranched polyphenylenes

Author:
Cha, Min Chul, Lim, Yoonbin, Chang, Ji Young
Source:
Journal of polymer science 2015 v.53 no.20 pp. 2336-2342
ISSN:
0887-624X
Subject:
crosslinking, polymers, porosity
Abstract:
The use of a hyperbranched polymer as a building block for the synthesis of a microporous organic polymer was demonstrated. Hyperbranched polyphenylenes (HBPs) were prepared from (3,5‐dibromophenyl)boronic acid, which contained numerous unreacted bromophenyl end groups. Utilizing metal‐catalyzed coupling reactions between these functional groups, cross‐linked porous polymers were obtained. Although the HBPs did not show porosity, their cross‐linked polymers had highly porous structures with Brunauer–Emmett–Teller surface areas of up to 2030 m²/g. An insoluble porous thin film was fabricated by spin casting of a solution containing a HBP followed by Sonogashira cross‐coupling reaction. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 2336–2342
Agid:
4084864