Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 5, Issue 27, Pages 14114-14123Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta01986f
Keywords
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Funding
- National Natural Science Foundation of China [21222601, 21476192, 21436010]
- Zhejiang Provincial Natural Science Foundation of China [LR13B060001]
- Fundamental Research Funds for the Central Universities [2014XZZX003-17]
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The synthesis of porous materials with a well-defined pore structure and functionality is centrally important for the development of advanced adsorbents and sensors. In this study, we explore a direct and facile methodology combining microphase separation and hypercrosslinking, and prepare anion-functionalized mesoporous poly(ionic liquid) s (MPILs) with well-developed mesopores. This methodology involved a copolymerization of IL monomers and crosslinkers to create mesopores via microphase separation. Additionally, the MPILs were texturally engineered by hypercrosslinking to stabilize/rebuild labile collapsed mesoporous networks and generate microporosity. Thus, a new family of anion-functionalized MPILs containing amphiphilic long-chain carboxylate ionic liquids (LCC-ILs) were synthesized. These anion-functionalized MPILs exhibited extraordinarily high adsorption capacity (211.45 mg g(-1) for tocopherols) and excellent selectivity (S-delta/alpha, 8.65; S-beta &/alpha, 4.20) for bioactive tocopherol homologues and organic phenolic compounds with high structural similarity, significantly better than those of commercial adsorbents or common MPILs. Additionally, anion-functionalized MPILs demonstrated enhanced carbon dioxide (CO2) capture performances (28.18 mg g(-1) at 0 degrees C and 1 bar). This study demonstrates the great potential of anion-functionalized MPILs as advanced adsorbents, and facilitates a textural engineering approach to the development of novel porous ionic materials for other applications.
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