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Molecular Expansion for Constructing Porous Organic Polymers with High Surface Areas and Well‐Defined Nanopores
Author(s) -
Liu Yuchuan,
Wang Shun,
Meng Xianyu,
Ye Yu,
Song Xiaowei,
Liang Zhiqiang,
Zhao Yanli
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202002702
Subject(s) - nanopore , polymer , porosity , bet theory , specific surface area , materials science , chemical engineering , nanotechnology , chemistry , catalysis , organic chemistry , composite material , engineering
Construction of porous organic polymers (POPs) with high surface areas, well‐defined nanopores, and excellent stability remains extremely challenging because of the unmanageable reaction process. Until now, only a few reported POPs have Brunauer‐Emmett‐Teller (BET) surface areas ( S BET ) exceeding 3000 m 2 g −1 . Herein, we demonstrate a molecular expansion strategy to integrate high surface areas, large nanopore sizes, and outstanding stability into POPs. A series of hyper‐crosslinked conjugated polymers ( HCCPs ) with exceptional porosity are synthesized through this strategy. Specially, HCCP‐6 and HCCP‐11 exhibit the highest surface areas ( S BET >3000 m 2 g −1 ) and excellent total pore volumes (up to 3.98 cm 3 g −1 ) among these HCCPs . They present decent total CH 4 storage capacities of 491 and 421 mg g −1 at 80 bar and 298 K, respectively. Meanwhile, they are highly stable in harsh environments. The facile and general molecular expansion strategy would lead to improved synthetic routes of POPs for desired functions.