摘要
4,6-二乙酰基-2,5-二甲基间苯二酚铕配合物和协同配体(1,10-邻二氮杂菲、2,2’-联吡啶或2,2’-联吡啶N,N’-二氧化物)在二氧化硅基体中通过两步凝胶反应实现了原位合成.在二氧化硅凝胶中配合物的形成可以通过电致发光光谱来证明.含有原位合成的这种铕配合物的二氧化硅凝胶显示出有铕离子发射谱带特性.结果表明有两种方法可以加强铕离子(Ⅲ)的放射强度:(i)在二氧化硅基体中合成这种复合物;(ii)合成的铕配合物中应含有能有效转移能量到Eu(III)的协同配体.
The complexes of europium with 4,6-diacetyl-2,5-dimethylresorcinol and a synergic ligand （ 1, 10-phenanthroline, 2,2＇-bipyridine or 2,2＇-bipyridine N, N＇-dioxide） were in-situ synthesized in silica matrix via a two-step gel process. The formation of complexes in silica gel was confirmed by the luminescence excitation spectra. The silica gels that contain in-situ synthesized europium complexes exhibit the characteristic emission bands of the europium ion. The results show that there are two ways to enhance the emission intensity of the Eu（Ⅲ） ： （i） synthesize the complex in silica matrix, and （ii） synthesize the complex with a synergic ligand, which coordinates with Eu（Ⅲ） in the composite system and can efficiently transfer the energy to the Eu（Ⅲ）.
出处
《湘潭大学自然科学学报》
CAS
CSCD
北大核心
2009年第3期65-69,74,共6页
Natural Science Journal of Xiangtan University
