Predesign and Systematic Synthesis of 11 Highly Porous Coordination Polymers with Unprecedented Topology

摘要

We propose and validate a simple strategy of vertex connection that can be used for framework design and pore size/type modulation to prepare a mother structure and another 10 highly porous isoreticular frameworks with unprecedented topology. Importantly, the potential accessible pore volumes (57-71%), pore sizes (6.8-11. 2 angstrom; 17.0-29.0 angstrom; 12.5-22.8 angstrom 11.9-24.5 angstrom and the pore shapes of this series of highly porous frameworks were simultaneously and systematically tuned. Interestingly, the pore size of IIa [Zn4O(L-2)(2)(BDC)(0.5)]{(CH3)(2)NH2} decreased a little less than that of IIc [Zn4O(L-2)(2)(2,6-NDC)(0.5)]{(CH3)(2)NH2}; however, its selectivity of CO2 toward CH4 increased by almost two times.