【摘要】 分别合成了铕与柠檬酸配位的二元配合物 ,铕、柠檬酸、1,10 -菲咯啉配位的三元配合物和掺杂不同量镧的多核三元配合物 .经过元素分析、红外分析和热重差热分析等手段确定了配合物的组成与结构 .通过荧光光谱及荧光寿命测试了其荧光性能 ,结果表明当铕与镧掺杂摩尔比为 6∶4时能得到荧光强度最强且荧光寿命最长的稀土配合物 .实验结果拟合表明 ,当铕镧摩尔比在 1∶9～ 5∶5时 ,镧离子对铕荧光的敏化程度以指数形式衰减 ,当铕镧摩尔比在 6∶4～ 9∶1时 ,镧离子对铕荧光的敏化程度以线性方式衰减更多还原

【Abstract】 Rare earth binary complex Eu(Cit)·4H 2O, ternary complex Eu(Cit)·phen·2H 2O and (Eu-La)Cit·phen were synthesized. Many advanced approaches, such as element analysis, FTIR spectra, TG and DTA analysis, were used to determine their composition and structures. In addition, their fluorescent properties were studied by fluorescent spectra and lifetime. The results showed that the fluorescence was the strongest and the lifetime was the longest when the mole ratio of europium to lanthanum was 6∶4. The results of fluorescent intensity were also fitted by mathematical tools. It showed that the degree of La 3+ enhance Eu 3+ fluorescence decreased by exponential Decay mode when Eu 3+ content was among the range of 1∶9～5∶5 and decreased by linear decay mode when Eu 3+ content was among the range of 6∶4～9∶1.更多还原