摘要
在较温和的条件下,利用二苯甲酰甲烷为第一配体,甲基丙烯酸为第二配体与氯化铕在乙醇中反应,合成了一个新的稀土三元配合物Eu(DBM)2MA.2H2O[DBM:C6H5COCHCOC6H5,MA:CH2C(CH3)COO-]。然后将铕三元配合物与甲基丙烯酸甲酯(MMA)进行共聚反应,制备了一个新的键合型稀土高分子共聚物。通过元素分析、EDTA配位滴定分析、红外、紫外、荧光光谱分析测定了配合物及共聚物的组成、结构和发光性能;利用差热-热重分析测定了共聚物的热稳定性,用差示扫描量热法和凝胶色谱法测定了共聚物的玻璃化温度和平均分子量。研究结果表明,稀土三元配合物和相应的共聚物在612.94 nm处均能发出强的Eu3+特征荧光。
Under the mild condition a new ternary rare earth complex Eu（DBM）2MA·2H2O[DBM：C6H5COCHCOC6H5,MA：CH2C（CH3）COO^-] was synthesized by the reaction of EuCl3 with dibenzoylmethane and methacrylate in alcohol. A new bonded copolymer Eu （DBM）2MA-MMA was prepared by copolymerization of the Eu （ DBM ）2MA· 2H2O complex with methyl methacrylate（MMA） monomer using AIBN as an initiator. The comoosition, structure and fluo-rescence properties of the complex and copolymer were characterized by means of elemental analysis, complex titration, IR, UV-VIS and fluorescent spectra. The thermal stability, glass temperature and average molecular weight of the copolymer Eu（DBM）2MA-MMA were determined by TG-DTA, DSC and GPC, respectively. The research results show that both of the ternary rare earth complex and the copolymer can emit strong Eu（ Ⅲ ） fluorescence at 613 nm.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2005年第6期654-658,共5页
Journal of the Chinese Society of Rare Earths
基金
内蒙古优秀学科带头人项目资助(20041001)
关键词
稀土共聚物
三元配合物
荧光性能
发光
稀土铕
rare earth copolymer
ternary complex
fluorescence property
luminescence
europium
