Yanping Huo, Shizheng Zhu, Sheng Hu
Nov 6, 2010
Citations
0
Influential Citations
30
Citations
Journal
Tetrahedron
Abstract
The use of a novel 2-substituted-8-hydroxyquinoline ligand (E)-2-{2-[3,5-bis(trifluoromethyl)phenyl] ethenyl}-8-hydroxyquinoline(4, BFHQ) characterized by EIMS, H-1 NMR spectroscopy, elemental analysis, and FTIR spectroscopy enabled the isolation of a trimeric Zn(II) complex with the formula Zn-3(BFHQ)(6) (5, Scheme 1). X-ray structural analysis shows that 5 exhibits a trinuclear core, which is bridged by four 8-hydroxyquinoline rings. The trinuclear core is surrounded by three pairs of BFHQ ligands with offset pi-pi stacking, showing propeller-like molecular structure. The aggregation behavior of Zn(AcO)(2) and the ligand 4 in solution was investigated by UV-vis. The luminescence properties of compound 5 were investigated by UV-vis and fluorescence spectra at room temperature. The experimental results show that the complex 5 emits yellow luminescence at 553 nm (lambda(em, max)) in DMSO solution and at 610 nm (lambda(em, max)) in solid state. The thermogravimetric analysis was carried out to examine the thermal stability. (C) 2010 Elsevier Ltd. All rights reserved.