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Synthetic Control of Pore Properties in Conjugated Microporous Polymers Based on Carbazole Building Blocks
Author(s) -
Wang Xiaoyan,
Zhao Yang,
Wei Lingling,
Zhang Chong,
Yang Xiao,
Yu Miao,
Jiang JiaXing
Publication year - 2015
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201400508
Subject(s) - conjugated microporous polymer , carbazole , polymer , alkyl , microporous material , adsorption , materials science , polymer chemistry , conjugated system , chemical engineering , molecule , linker , condensation polymer , chemistry , organic chemistry , composite material , computer science , engineering , operating system
A series of conjugated microporous polymers (CMPs) from 1,3,6,8‐tetrabromocarbazole and its alkylated derivative is synthesized via Suzuki cross‐coupling polycondensation. These polymer networks are stable in common organic solvents and thermally stable. The pore properties (pore size and surface area) of this kind of CMPs can be tuned by using either a linker with different geometries or carbazole substituted with alkyl groups. All of the polymers show high isosteric heats of CO 2 adsorption (27.1–30.8 kJ mol −1 ) because the incorporation of nitrogen atoms into the skeleton of the CMP enhances the interaction between the pore wall and CO 2 molecules. The polymer PPTBC shows a high Brunauer–Emmett–Teller specific surface area up to 917 m 2 g −1 with a high CO 2 uptake ability of 2.93 mmol g −1 at 1.13 bar/273 K. These data show that these materials are potential candidates for applications in post‐combustion CO 2 capture and sequestration technology.