A metal-organic framework （MOF） has been obtained by using a linker extension strategy. Three di-anions of 4-（3,5-dimethyl- 1H-pyrazol-4-yl）-benzoic acid coordinate to three Cu（I） ions forming an extended trigon...A metal-organic framework （MOF） has been obtained by using a linker extension strategy. Three di-anions of 4-（3,5-dimethyl- 1H-pyrazol-4-yl）-benzoic acid coordinate to three Cu（I） ions forming an extended trigonal planar ligand, which links three di-copper paddlewheel units giving rise to a Pt304 net.展开更多
Investigating gas separation by emerging porous organic cage(POC) solids is still on its initial stage. In this work, two novel [2+4] organic cages with distinguished structures have been prepared based on the Schiff-...Investigating gas separation by emerging porous organic cage(POC) solids is still on its initial stage. In this work, two novel [2+4] organic cages with distinguished structures have been prepared based on the Schiff-based condensation reaction between tetraformyl-functionalized calix[4]resorcinarene building blocks and xylylenediamine(XDA) isomers. Specifically, the use of para-position XDA affords lantern-shaped cage(CPOC-105) with a medium cavity of ca. 0.526 nm^(3), while the meta-position produces peanut-shaped structure(CPOC-106) with two small cavities of ca. 0.181 nm^(3). Both CPOC-105 and CPOC-106 exhibit high selectivity capture of CO_(2) over CH4 with calculated selectivity coefficients of 4.5 and 3.1, respectively, under ambient conditions, and are capable of separating CO_(2)/CH_(4) mixtures by fixed-bed column breakthrough experiments.展开更多
基金supported by the U.S. Department of Energy (DOE Grants DE-FC36-07GO17033)the Welch Foundation (A-1725)+1 种基金supported by the National Science Foundation/Department of Energy under grant number NSF/CHE-0822838supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357
文摘A metal-organic framework （MOF） has been obtained by using a linker extension strategy. Three di-anions of 4-（3,5-dimethyl- 1H-pyrazol-4-yl）-benzoic acid coordinate to three Cu（I） ions forming an extended trigonal planar ligand, which links three di-copper paddlewheel units giving rise to a Pt304 net.
基金supported by the National Natural Science Foundation of China(No.22071244)the Natural Science Foundation of Fujian Province,China(Nos.2019I0028,2020J05087).
文摘Investigating gas separation by emerging porous organic cage(POC) solids is still on its initial stage. In this work, two novel [2+4] organic cages with distinguished structures have been prepared based on the Schiff-based condensation reaction between tetraformyl-functionalized calix[4]resorcinarene building blocks and xylylenediamine(XDA) isomers. Specifically, the use of para-position XDA affords lantern-shaped cage(CPOC-105) with a medium cavity of ca. 0.526 nm^(3), while the meta-position produces peanut-shaped structure(CPOC-106) with two small cavities of ca. 0.181 nm^(3). Both CPOC-105 and CPOC-106 exhibit high selectivity capture of CO_(2) over CH4 with calculated selectivity coefficients of 4.5 and 3.1, respectively, under ambient conditions, and are capable of separating CO_(2)/CH_(4) mixtures by fixed-bed column breakthrough experiments.
