Synthesis, Characterization and Property of Nano Rare Earth Terbium Complex with Gatifloxacin

摘要

Rare earth metal complexes have special characteristics, such as extremely narrow emission bands and high internal quantum efficiencies, which are suitable to be used as the emission materials, chemistry and biological technology. Ternary nano complex of terbium gatifloxacin phenanthroline was synthesized. The composition and structure of ternary complex were characterized by element analysis, Mass Spectrometry (MS), UltraViolet Absorption Spectrometry (UV) and fluorescence spectra(FS). The influences of solubility, thermal stability and luminescent properties of complex as well as addition of phenanthroline secondary ligands on the fluorescence spectra of the ternary complexes were studied. The results of fluorescence spectra analysis showed that partial energy was transferred from Characterization to terbium ions by intramolecular energy transfer processes, meanwhile, the addition of phenanthroline can effectively increase the luminescence intensity of terbium icons. The complex possessed well luminescence and showed characteristic emission peaks of Tb~(3+) under UV light excitation and emitted strong green fluorescence. Moreover, in an ITO/PVK/Tb(GFLX)_3Phen/Al device, Tb~(3+) ion can be excited by intramolecular ligand-to-metal energy transfer process. The main peak of emission at 545 nm is attributed to ~5D_0→~7F_2 transition of the Tb~(3+) ion, and this process results in the enhancing green emission. Biological actrivity properties of the rare earth complex was well studied.