Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 44, Pages 19487-19493Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202002702
Keywords
conjugated microporous polymers; hyper-crosslinked polymers; methane storage; molecular expansion; porous organic polymers
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Funding
- National Natural Science Foundation of China [21621001, 21871104]
- National Key Research and Development Program of China [2016YFB0701100]
- 111 project of the Ministry of Education of China [B17020]
- Singapore National Research Foundation Investigatorship [NRF-NRFI2018-03]
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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 CH4 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.
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