A new Nd3+-doped organic complex featuring two different perfluorinated carboxylic acids as the first ligand and pyridine derivative 2-amino-3-chloro-5-(trifluoromethyl)pyridine as the second ligand was designed and synthesized.Successful coordination between the ligands and central rare earth ions was confirmed by Fourier transform infrared spectroscopy(FT-IR)spectra,1H nuclear magnetic resonance(1H NMR)spectra,and UV spectra,and the synthesized complex is inferred to be eight-coordinate structure.Solution of the complex dissolved in DMSO-d6 was prepared and then its fluorescence spectrum,UV–Vis–NIR absorption spectrum,and fluorescence decay curve were tested.The fluorescent lifetime is about 7 ls.Based on the above experimental research,Judd–Ofelt analysis was carried out,and the results indicate that appropriate coordination environment around Nd3?in this solution results in a high fluorescent quantum efficiency 2%and a large stimulated emission cross-section about 3.2 9 10-20cm2at 1,064 nm.
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