在甲基苯甲酰甲基亚砜高氯酸体系中Tm^(3+)、Pr^(3+)对Eu^(3+)的荧光增强效应

Fluorescent Enhancing Effect of Tm^(3+) and Pr^(3+) to Eu^(3+) in Methyl-phenacyl Sulfoxide and Rare Earth Perchlorate

合成了不同摩尔比的甲基苯甲酰甲基亚砜高氯酸铕、铥异核配合物和高氯酸铕、镨异核配合物(Eu1-xREx)(ClO4)3.L5.C2H5OH(RE=Tm、Pr,x=0.000~0.200,L=C6H5COCH2SOCH3)。红外光谱及摩尔电导表明,配体通过亚砜基上的氧原子与稀土离子配位,羰基氧不参与配位,三个ClO4-有两个在内界参与了配位,而另一个在外界不参与配位。荧光光谱表明,当Tm3+和Pr3+的掺入量分别在0.001mol^0.01mol和0.001mol^0.100mol之间时,对Eu3+的荧光产生敏化作用,且Tm3+和Pr3+的掺入量都为0.001mol时,敏化强度最大,分别可使Eu3+荧光强度增加109%和137%。

Different proportional binuclear complexes （added Tm3＋ and Pr3＋ to Eu3＋ ） of rare earth perchlorate with methylphenacyl sulfoxide were synthesized. Elemental analysis and mole conductivifies show that the complexes have a composition of （Eu1-xREx）（ClO4）3.L5.C2H5OH（RE=Tm、Pr,x=0.000-0.200,L=C6H5COCH2SOCH3）, two ClO4- anions coordinated with Ln3＋ and the other did not. IR spectra suggested the ligand coordinated with Ln3＋ （Ln = Tm,Pr）by oxygen atom in sulfinyl group, the oxygen atom in carbonyl group did not bond. Fluorescence spectra indicated that Tm3 ＋ and Pr3 ＋ have most sensitization effect to Eu3＋ when the ratio of Eu3＋ ：Ln3＋ （Ln= Tm,Pr）is 0.999：0.001. The fluorescence intensity was increased to 109% and 137% respectively.