Synthesis and luminescence of Eu(III) complexes with macrocyclic azacrown ethers and 1,10-phenanthroline
Synthesis and luminescence of Eu(III) complexes with macrocyclic azacrown ethers and 1,10-phenanthroline
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DOI：
10.1016/j.jlumin.2007.01.012
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发表时间：
2007-12-01
影响因子：
3.6
通讯作者：
Kang, Jun-Gill
中科院分区：
文献类型：
--
作者：
Lee, Jong Cheol;Choi, Kwang-Soon;Kang, Jun-Gill
合成了铕（Ⅲ）与混合大环氮杂冠醚和1，10-邻菲咯啉（phen）的配合物，并测定了它们的发光性能。使用的具体氮杂冠醚是1，4，8，11-四氮杂环十四烷-1，4，8，11-四乙酸酯（TETA）和1，4，8，12-四氮杂环十五烷（[15]aneN（4））。在紫外光的激发下，Phen与Eu（III）的配位络合物通过分子内能量转移产生了非常明亮的红色荧光。对于[Eu（TETA）-（phen）-（H2O）]（-）和[Eu（[15]aneN（4））中心点（phen）（2）]（3+），敏化发光的量子产率分别为8.4%和7.8%，远高于未敏化发光的量子产率1.2%和4.4%。在室温下测得的相应的酚配位络合物的衰减时间分别为1.6和0.6ms，远长于非酚配位络合物的衰减时间，分别为0.3和0.2ms。(c)2007 Elsevier B. V.保留所有权利。
Complexes of Eu(III) with mixed macrocyclic azacrown ethers and 1,10-phenanthroline (phen) were synthesized and their luminescence properties measured. The specific azacrown ethers used were 1,4,8,11-tetraazacyclotetradecane-1,4,8,11-tetraacetate (TETA) and 1,4,8,12-tetraazacyclopentadecane ([15]aneN(4)). The phen-coordinated complexes excited by UV light produced a very bright red emission via an intra-molecular energy transfer from phen to Eu(III). For [Eu(TETA)-(phen)-(H2O)](-) and [Eu([15]aneN(4)) center dot (phen)(2)](3+), the quantum yields of sensitized luminescence were 8.4% and 7.8%, respectively, and were much greater than those from non-sensitized luminescence of 1.2% and 4.4%, respectively. The decay times of the corresponding phen-coordinated complexes, as measured at room temperature, were 1.6 and 0.6ms, respectively, and were much longer than those of the phenuncoordinated complexes of 0.3 and 0.2ms, respectively. (c) 2007 Elsevier B.V. All rights reserved.