轻稀土高氯酸苯基苯甲酰甲基亚砜配合物的合成、表征及铕的光致发光

Synthesies and Characterization of Phenylphenacylsulfoxide Complexes with Light Rare Earth Perchlorate and Photoluminescence of Eu 3+ Complex

合成并表征了轻稀土高氯酸盐与苯基苯甲酰甲基亚砜的 5种固态配合物。经元素分析及差热 热重分析表明 ,配合物的组成为 :RE(ClO4) 3 ·L5·2H2 O(RE =La ,Pr ,Nd ,Sm ,Eu)。红外光谱及核磁共振氢谱表明 ,配体通过 1个羰基氧和 1个亚砜基氧与稀土离子配位。在丙酮溶液中测定的摩尔电导表明 ,3个ClO-4,其中2个在内界 ,1个在外界。铕配合物的荧光光谱表明 ,配体对铕 (Ⅲ )的荧光具有较强的敏化作用。

Five solid complexes of phenyl-phenacyl sulfoxide(L) with light rare earth perchlorate have been synthesized and characterized. Elemental analysis and TG-DTA results suggested the complexes have a composition of RE(ClO 4) 3·L 5·2H 2O(RE=La,Pr,Nd,Sm,Eu). IR and 1HNMR spectra results indicated that the ligand is bonded with RE(Ⅲ) ions through one oxygen atom of carbonyl group and one oxygen atom of sulfoxyl group. The molar conductivies and IR data indicated that only two anions ClO- 4 are in coordination. The ligand in Eu 3+ complex showed a sensitization effect on the fluorescence of RE 3+.