5-硝基-1,10-邻菲罗啉的合成及性质研究

Synthesis and Properties of 5-Nitro-1,10-phenanthroline

合成了5-硝基-1,10-邻菲罗啉,利用IR,UV,1H NMR,MS和元素分析确认其结构;测定了目标产物的荧光和磷光光谱.实验结果表明:目标产物在460 nm附近出现发射峰,强烈地覆盖了稀土离子的吸收光谱,具有很强的向稀土离子能量转移的趋势;其三重态能级约为20 048 cm-1,明显高于Eu3+、Sm3+的受激发态能级,因此可预测5-硝基-1,10-邻菲罗啉可有效敏化Eu3+、Sm3+离子的发光.

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＋.