Xu Cun-jin
2010
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Journal
Journal of Hangzhou Normal University
Abstract
The paper has synthesized and characterized 5-nitro-1,10-phenanthroline by IR,UV,1H NMR,MS and elemental analysis,determined the luminescence and phosphorescence spectra of the title compound.The experimental results have showed that the compound presents an emission peak around 460 nm,which covers the absorption spectra of the rare earth ions,indicating a strong tendency of energy transfer to the rare earth ion.The triplet state energy of the compound is determined to be 20 048 cm-1,which is much higher in energy than the resonance levels of Eu3+ and Sm3+ ions.So it can be predicted that 5-nitro-1,10-phenanthroline is able to sensitize the luminescence of Eu3+ and Sm3+.