Song Xue-Qin, Wang Ya-Wen, Zheng Jiang-Rong, Liu Wei-Sheng, Tan Min-Yu
College of Chemistry and Chemical Engineering and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2007 Nov;68(3):701-4. doi: 10.1016/j.saa.2006.12.048. Epub 2007 Jan 5.
Solid complexes of lanthanide nitrate with 1,4-di(N,N-di-n-butyl-acetamido)-quinoxaline-2,3-dione (L), [Ln(N03)3L.H2O] (Ln=La, Nd, Eu, Gd, Tb, Er), have been prepared and characterized by elemental analysis, IR, UV-vis spectra and conductivity measurements. The fluorescence property of the europium complex in solid state and in MeCN, acetone, AcOEt and THF was studied. Under the excitation, the europium complex exhibited characteristic emissions of europium. The result indicates that the triplet state energy level of the ligand matches better to the resonance level of Eu(III) than Tb(III) ion.
已制备出硝酸镧系元素与1,4 - 二（N，N - 二正丁基 - 乙酰氨基） - 喹喔啉 - 2,3 - 二酮（L）的固态配合物[Ln(NO₃)₃L·H₂O]（Ln = La、Nd、Eu、Gd、Tb、Er），并通过元素分析、红外光谱、紫外可见光谱和电导率测量对其进行了表征。研究了铕配合物在固态以及在乙腈、丙酮、乙酸乙酯和四氢呋喃中的荧光性质。在激发下，铕配合物呈现出铕的特征发射。结果表明，该配体的三重态能级与Eu(III)的共振能级比与Tb(III)离子的共振能级匹配得更好。
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