文献详情
Excitation Energy-Transfer Processes in the Sensitization Luminescence of Europium in a Highly Luminescent Complex
文献类型：期刊
通讯作者：Wang, Y (reprint author), Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China.; Wang, Y (reprint author), Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China.; Zhang, JP (reprint author), Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China.
期刊名称：CHEMISTRYOPEN影响因子和分区
年：2019
卷：8
期：3
页码：388-392
ISSN：2191-1363
关键词：Europium; energy transfer; sensitization luminescence; singlet pathway; time-resolved spectroscopy
所属部门：化学系
摘要：The excitation energy transfer (EET) pathways in the sensitization luminescence of Eu-III and the excitation energy migration between the different ligands in [Eu(fod)(3)dpbt] [where fod=6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione and dpbt=2-(N,N-diethylanilin-4-yl)-4,6-bis(3,5-dimethylpyrazol-1-yl)-1,3,5-triazine], exhibiting well-separated fluorescence excitation and phosphorescence bands of the different ligands, were investigated by using time-resolved luminescence spectroscopy fo ...More
The excitation energy transfer (EET) pathways in the sensitization luminescence of Eu-III and the excitation energy migration between the different ligands in [Eu(fod)(3)dpbt] [where fod=6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione and dpbt=2-(N,N-diethylanilin-4-yl)-4,6-bis(3,5-dimethylpyrazol-1-yl)-1,3,5-triazine], exhibiting well-separated fluorescence excitation and phosphorescence bands of the different ligands, were investigated by using time-resolved luminescence spectroscopy for the first time. The data clearly revealed that upon the excitation of dpbt, the sensitization luminescence of Eu-III in [Eu(fod)(3)dpbt] was dominated by the singlet EET pathway, whereas the triplet EET pathway involving T-1(dpbt) was inefficient. The energy migration from T-1(dpbt) to T-1(fod) in [Eu(fod)(3)dpbt] was not observed. Moreover, upon the excitation of fod, a singlet EET pathway for the sensitization of Eu-III luminescence, including the energy migration from S-1(fod) to S-1(dpbt) was revealed, in addition to the triplet EET pathway involving T-1(fod). Under the excitation of dpbt at 410 nm, [Eu(fod)(3)dpbt] exhibited an absolute quantum yield for Eu-III luminescence of 0.59 at 298 K. This work provides a solid and elegant example for the concept that singlet EET pathway could dominate the sensitization luminescence of Eu-III in some complexes. ...Hide

DOI：10.1002/open.201900012
百度学术：Excitation Energy-Transfer Processes in the Sensitization Luminescence of Europium in a Highly Luminescent Complex
语言：外文
人气指数：4
浏览次数：4
基金：Chinese Ministry of Science and TechnologyMinistry of Science and Technology, China [2016YFE0118700]; NSFCNational Natural Science Foundation of China [21821004, 21573010]
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