| Institution: | 1. School of Chemistry, South China Normal University, Guangzhou, 510006 P. R. China
These authors contributed equally.;2. School of Chemistry, South China Normal University, Guangzhou, 510006 P. R. China;3. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006 P. R. China |
| Abstract: | Materials combining proton conductivity and magnetism have attracted great attention in recent years due to their intriguing application in sensors and fuel cells. Herein a two-dimensional metal-organic framework, Cu(atz)2(H2O)2]?H2O ( 1 ) (Hatz=5-aminotetrazole), has been obtained in a green synthesis method. The single-crystal structure revealed that the atz? ligands as linkers coordinate with copper ions to sql networks, between which water molecules are immobilized through hydrogen bonds. The resulting complex 1 exhibits a high proton conductivity of 1.11×10?4 and 6.19×10?4 S cm?1 at room temperature and 333 K, respectively, under 98% RH with an activation energy of 0.56 eV. Upon dehydration, the proton conductivity of 1_dg drops by an order of magnitude. Furthermore, the magnetic behavior changes from long-range ferrimagnetic ordering of 1 to canted antiferromagnetic behaviour of 1_dg . |
