两种新的铕配合物的合成、表征及其光、热、电性质

Synthesis and Characteristic of Two Novel Euorpium Complexes and Their Optical,Thermal and Electrochemical Properties

以邻苯二甲酸酐、二苯胺、4-氨基安替吡啉和三氧化二铕为原料合成了Eu（PPA）3Phen和Eu（APA）3Phen。使用核磁和质谱对配体和配合物进行了表征,研究了紫外、荧光光谱、磷光寿命、热稳定性和电化学性质。结果表明,配合物的紫外吸收分别表现出生成它们各自配体的紫外吸收特征,Eu（PPA）3Phen和Eu（APA）3Phen在613nm处有很强的荧光发射,归属于Eu3＋的5D0→7F2的特征发射,此外,在590nm处都有荧光发射。测得两种配合物粉末的磷光寿命,它们相差较大,Eu（PPA）3Phen有三个磷光寿命都约为0.45μs,Eu（APA）3Phen有两个磷光寿命都为650μs。热重分析表明,Eu（PPA）3Phen在30℃～260℃分解大约10%,而Eu（APA）3Phen在70℃～240℃分解大约5%。使用循环伏安法研究了Eu（PPA）3Phen和Eu（APA）3Phen的电化学性质,结果表明两者都约在0.86V处有不可逆的氧化电位值。

Using phthalic anhydride, diphenylamine, 4- aminoantipyrine and europia as basic materials, through several reac- tions, tri （ N, N - Diphcnyl - phthalamic acid ） （ 1,10 - phenanthroline ） Eu （III ） [ Eu （PPA） 3 Phen ] and tri （ N - antipyrine - 4 - yl -phthalamic acid） （1,10-phenanthroline） Eu（III） [Eu（APA）aPhen] were obtained. Structures of the lignds and complexes were comfired by 1HNMR and LC -MS. Their UV -spectra, photoluminesecent spectra,lifetime of phosohorscence, TG curves and electrochemical performance were studied. The results showed UV spectra character of Eu（PPA） 3Phen and Eu（ APA）3Phen is nearly identical with their ligands. The two complexes have strong photoluminescence at 613nm, which are assigned to special emission of Eu3 ＋. Eu（PPA） 3 Phen have three lifetimes of around 0.45txs, Eu（APA） 3 Phen have those of 650p.s. TG analysis indicates mass loss of Eu（PPA）3 Phen is 10% from 30℃ to 260℃, and the mass loss of Eu （APA）3 Phan is 5% in the scale of 70℃ -240℃. Both of Eu（PPA）3Phen and Eu（APA）3Phen have a irreverse oxide potential value at round 0.86V.