Energy-Transfer Mechanisms in Ir-III-Eu-III Bimetallic Complexes

doi:10.1002/cplu.201300107

CORC > 北京大学 > 化学与分子工程学院

	Energy-Transfer Mechanisms in Ir-III-Eu-III Bimetallic Complexes
	Yu, Gang ; Xing, Yadong ; Chen, Fangfang ; Han, Ruimin ; Wang, Jianqiang ; Bian, Zuqiang ; Fu, Limin ; Liu, Zhiwei ; Ai, Xicheng ; Zhang, Jianping ; Huang, Chunhui
刊名	chempluschem
	2013
关键词	energy transfer heterometallic complexes kinetics luminescence time-resolved spectroscopy LUMINESCENT LANTHANIDE COMPLEXES PHOSPHINE-OXIDE LIGAND WHITE-LIGHT EMISSION EUROPIUM COMPLEXES ELECTROLUMINESCENT DEVICES AROMATIC SPACERS CHELATE SENSORS IONS IRIDIUM(III)
DOI	10.1002/cplu.201300107
英文摘要	The bridging ligands in d-f bimetallic complexes play an important role in the excitation energy transfer (EET) process. To elaborate on the effect of the ligand on the EET process, a series of bridging ligands (-L), 1-(1,10-phenanthrolin-2-yl)-4,4,4-trifluorobutane-1,3-dione (phen3f), 1-(1,10-phenanthrolin-2-yl)-4,4,5,5,5-pentafluoropentane-1,3-dione (phen5f), 1-(2,2-bipyridine-6-yl)-4,4,4-trifluorobutane-1,3-dione (bpy3f), and 1-(2,2-bipyridine-6-yl)-4,4,5,5,5-pentafluoropentane-1,3-dione (bpy5f), and their corresponding iridium complexes, [(dfppy)(2)Ir(-L)] (dfppy=2-(4,6-difluorophenyl)pyridinato-N,C2), as well as their corresponding heteroleptic Ir-III-Eu-III complexes [{(dfppy)(2)Ir(-L)}(3)EuCl]Cl-2 were synthesized and characterized. Photophysical and kinetic results revealed that the alternation of the bridge ligand resulted in a systemic difference in the lowest triplet-state energy (T-1) of the iridium complexes, the EET efficiency from iridium complexes to the Eu-III ion, and a significant difference in the total luminescence quantum yields. Based on the nanosecond time-resolved phosphorescence spectra, a model for the energy-transfer mechanism was proposed for d-f bimetallic complexes, which indicated that the nonradiative relaxation of the excited energy of Eu-III, especially energy dissipation by means of the T-1 state, was the main reason for the discrepancy in the quantum yields of the four Ir-III-Eu-III complexes.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000322885600020&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; SCI(E); 1; ARTICLE; 8; 852-859; 78
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/313026]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yu, Gang,Xing, Yadong,Chen, Fangfang,et al. Energy-Transfer Mechanisms in Ir-III-Eu-III Bimetallic Complexes[J]. chempluschem,2013.
APA	Yu, Gang.,Xing, Yadong.,Chen, Fangfang.,Han, Ruimin.,Wang, Jianqiang.,...&Huang, Chunhui.(2013).Energy-Transfer Mechanisms in Ir-III-Eu-III Bimetallic Complexes.chempluschem.
MLA	Yu, Gang,et al."Energy-Transfer Mechanisms in Ir-III-Eu-III Bimetallic Complexes".chempluschem (2013).