期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 173, 期 -, 页码 92-98出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2013.02.006
关键词
Porous aromatic frameworks; Sonogashira-Hagihara coupling reaction; Hydrophobic materials; Selective sorption
类别
资金
- National Basic Research Program of China (973 Program) [2012CB8 21700]
- Major International (Regional) Joint Research Project of NSFC [21120102034]
- NSFC [20831002]
- Australian Research Council Future Fellowship [FT100101059]
We report here pyrene-based fluorescent porous aromatic frameworks (PAF-19 and PAF-20), which are constructed by a quadrilateral building unit 1,3,6,8-tetrabromopyrene (TBrPy) with linkers 1,4-diethynylbenzene and 1,3,5-triethynylbenzene via Sonogashira-Hagihara coupling reaction, respectively. TG analysis shows that PAF-19 and PAF-20 are thermally stable up to 350 degrees C in air condition. Both materials also exhibit high chemical stability and cannot dissolve or decompose in any common organic solvents. N-2 sorption results reveal that the BET surface areas of PAF-19 and PAF-20 are 250 m(2) g(-1) and 702 m(2) g(-1), respectively. They also display relatively high sorption abilities for hydrogen and carbon dioxide. H2O sorption measurements demonstrate that the skeletons of PAF-19 and PAF-20 are highly hydrophobic. Interestingly, PAF-19 and PAF-20 exhibit excellent sorption abilities to organic chemical pollutants at the saturated vapor pressure and room temperature. PAF-20 can adsorb large amounts of methanol and benzene, with values of 609 mg g(-1) and 1038 mg g(-1), respectively. The good performances of PAF-19 and PAF-20 with high sorption selectivity promise their potential application for eliminating environmental pollutants in presence of H2O. (c) 2013 Elsevier Inc. All rights reserved.
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