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以邻(间、对)苯二甲酸[o(m、p)-PA]和1,10-邻菲啰啉(phen)为配体,合成了5种Tb(III)的三元配合物。各配合物的组成分别为:Tb2(m-PA)3(phen)2.6 H2O、Tb2(p-PA)3(phen)2.2 H2O、Tb2(o-PA)3phen.4 H2O、Tb2(m-PA)3phen.4 H2O和Tb2(p-PA)3phen.4 H2O。红外光谱分析表明,在各配合物中羧基氧原子和1,10-邻菲啰啉中的氮原子均参与了配位。5种配合物均有较好的热稳定性,它们的热稳定性顺序为:Tb2(m-PA)3(phen)2.6 H2O>Tb2(p-PA)3(phen)2.2 H2O>Tb2(m-PA)3phen.4 H2O>Tb2(o-PA)3phen.4 H2O>Tb2(p-PA)3phen.4 H2O。在室温条件下,5种铽的三元固体配合物均发出绿色荧光,它们在最佳发射峰5D4→7F5(545nm)时的荧光强度顺序为:Tb2(p-PA)3phen.4 H2O>Tb2(m-PA)3(phen)2.6 H2O>Tb2(p-PA)3(phen)2.2 H2O>Tb2(m-PA)3phen.4 H2O>Tb2(o-PA)3phen.4 H2O。
Five ternary complexes of Tb (III) were synthesized using [o (m, p) -PA] and 1,10-phenanthroline (phen) as ligands. The compositions of the complexes are: Tb 2 (m-PA) 3 (phen) 2.6 H2O, Tb 2 (p-PA) 3 ) 3phen.4 H2O and Tb2 (p-PA) 3phen.4 H2O. IR spectroscopy showed that the carboxyl oxygen atoms and the nitrogen atoms in 1,10-phenanthroline all participated in the coordination. The thermal stability of the five complexes are in good order: Tb2 (m-PA) 3 (phen) 2.6 H2O> Tb2 (p- -PA) 3phen.4 H2O> Tb2 (o-PA) 3phen.4 H2O> Tb2 (p-PA) 3phen.4 H2O. The ternary solid complexes of five kinds of terbium all emit green fluorescence at room temperature. The order of their fluorescence intensity at the best emission peak 5D4 → 7F5 (545nm) is Tb2 (p-PA) 3phen.4 H2O> Tb2 (phenylenediamine) 2 H2O> Tb2 (p-PA) 3phen.4 H2O (m-PA) 3 (phen) 2.6 H2O> Tb2