1 Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China. wyaoyu@nwu.edu.cn.
A doubly interpenetrated MOF was constructed using a new pyridyl carboxylate ligand with active pyridyl sites, which exhibits highly efficient luminescence sensing for Cu(2+) ions and sorption selectivities of CO2 over CH4 and N2.