摘要
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 novel Tb(Ⅲ) ternary complexes were synthesized with o(m.p)-phthalate acid [o(m,p)-PA] as the first iigand, and 1, 10-phenanthroline (phen) as the second ligand. Their compositions were Tb2 (m-PA)3(phen)2 ·6 H20. Tb2 (p-PA) 3 (phen) 2 · 2 H2O. Tb2 (o-PA) 3 phen · 4 H2O, Tb2 (m-PA)3 phen ·4 H2O and Tb2 ( p-PA ) 3 phen·4 H2 O, respectively. In these complexes, the metal ions were bonded to the oxygen atoms of carboxylate and the nitrogen atoms of phen. These complexes were thermally stable. The stability order was : Tb2 (m-PA)a (phen)2 ·6H2O〉 Tb2 (p-PA)3 (phen) 2·2H2O〉 Tb2 (m-PA) a phen · 4H2O〉 Tb2 (o-PA) 3 phen· 4H2O〉 Tb2 (p-PA)3 phen· 4H2O. The excitation and luminescence spectra were carried out at room temperature. The intensity order of the strongest emission peak (5D4→7F5) for these Tb(Ⅲ) complexes were: Tb2 (p-PA)aphen· 4H2O〉 The (m-PA)3(phen)2·6H2O〉 Tb2 (p-PA)a (phen)2· 2H2O〉 Th2 (m-PA)3phen. 4H2O〉Tb2 (o-PA)aphen·4H2O.
出处
《化工新型材料》
CAS
CSCD
北大核心
2010年第4期23-25,36,共4页
New Chemical Materials
基金
国家自然科学基金(No.20773034)
河北省自然科学基金(No.B2007000237)
河北师范大学基金资助项目(No.L2006Y03)
关键词
铽
苯二甲酸
1
10-邻菲啰啉
三元配合物
荧光光谱
terbium, o(m.p)-phthalate acid, 1, 10-phenanthroline, ternary complex, fluorescence spectra