Triple-Ringed Luminescent Heptanuclear Zn(II) Cluster for Efficient Ag(I) Ion Sensing Materials

The organic ligands (E)-8-hydroxyquinoline-2-carbaldehyde oxime (H2L1) and furan-2-ylmethanamine (H2L2) were used to react with Zn(NO3)(2)center dot 6H(2)O at 140 degrees C solvothermal for two days to obtain the heptanuclear Zn(II) cluster [Zn-7(L-1)(4)(HL1)(2)(H2L2)(mu(2)-OH)(mu(2)-O)(NO3)] (1). The X-ray single crystal di ff raction reveals that every five-coordinated Zn(II) ions are surrounded by two N atoms and three O atoms with the N2O3 coordination environment and four-coordinated Zn(II) ion surrounded by one N atom and three O atoms in the NO3 coordinated environment. The photoluminescence of cluster 1 is obvious. Moreover, in the presence of Ag(I) ions, cluster 1 exhibits an e ffi cient recognition ability, and it realizes the recognition of toxic metal ions. Here, we have developed cluster-based sensing materials for the e ffi cient detection of heavy metal ions Ag(I) strategies.