| Affiliation: | 1. State Key Lab of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, 130012 P. R. China Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore;2. State Key Lab of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, 130012 P. R. China;3. Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore, Singapore |
| Abstract: | 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 (SBET) exceeding 3000 m2 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 (SBET >3000 m2 g−1) and excellent total pore volumes (up to 3.98 cm3 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. |
