Ytterbium(III) Porpholactones: beta-Lactonization of Porphyrin Ligands Enhances Sensitization Efficiency of Lanthanide Near-Infrared Luminescence

doi:10.1002/chem.201303972

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	Ytterbium(III) Porpholactones: beta-Lactonization of Porphyrin Ligands Enhances Sensitization Efficiency of Lanthanide Near-Infrared Luminescence
	Ke, Xian-Sheng 1; Yang, Bo-Yan 1; Cheng, Xin 1; Chan, Sharon Lai-Fung 2; Zhang, Jun-Long 1
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2014-04-07
卷号	20 期号:15 页码:4324-4333
关键词	Biosensors Lanthanides Luminescence Porphyrinoids Ytterbium
ISSN号	0947-6539
DOI	10.1002/chem.201303972
英文摘要	The near-infrared (NIR) luminescence efficiency of lanthanide complexes is largely dependent on the electronic and photophysical properties of antenna ligands. Although porphyrin ligands are efficient sensitizers of lanthanide NIR luminescence, non-pyrrolic porphyrin analogues, which have unusual symmetry and electronic states, have been much less studied. In this work, we used porpholactones, a class of -pyrrolic-modified porphyrins, as ligands and investigated the photophysical properties of lanthanide porpholactones Yb-1a-5a. Compared with Yb porphyrin complexes, the porpholactone complexes displayed remarkable enhancement of NIR emission (50-120%). Estimating the triplet-state levels of porphyrin and porpholactone in Gd complexes revealed that -lactonization of porphyrinic ligands lowers the ligand T-1 state and results in a narrow energy gap between this state and the lowest excited state of Yb3+. Transient absorption spectra showed that Yb-III porpholactone has a longer transient decay lifetime at the Soret band than the porphyrin analogue (30.8 versus 17.0s). Thus, the narrower energy gap and longer lifetime arising from -lactonization are assumed to enhance NIR emission of Yb porpholactones. To demonstrate the potential applications of Yb porpholactone, a water-soluble Yb bioprobe was constructed by conjugating glucose to Yb-1a. Interestingly, the NIR emission of this Yb porpholactone could be specifically switched on in the presence of glucose oxidase and then switched off by addition of glucose. This is the first demonstration that non-pyrrolic porphyrin ligands enhance the sensitization efficiency of lanthanide luminescence and also display switchable NIR emission in the region of biological analytes (800-1400nm).
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000333632800019
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/50565]
专题	中国科学院化学研究所
通讯作者	Zhang, Jun-Long
作者单位	1.Peking Univ, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem Applicat, Beijing 100871, Peoples R China 2.Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Ke, Xian-Sheng,Yang, Bo-Yan,Cheng, Xin,et al. Ytterbium(III) Porpholactones: beta-Lactonization of Porphyrin Ligands Enhances Sensitization Efficiency of Lanthanide Near-Infrared Luminescence[J]. CHEMISTRY-A EUROPEAN JOURNAL,2014,20(15):4324-4333.
APA	Ke, Xian-Sheng,Yang, Bo-Yan,Cheng, Xin,Chan, Sharon Lai-Fung,&Zhang, Jun-Long.(2014).Ytterbium(III) Porpholactones: beta-Lactonization of Porphyrin Ligands Enhances Sensitization Efficiency of Lanthanide Near-Infrared Luminescence.CHEMISTRY-A EUROPEAN JOURNAL,20(15),4324-4333.
MLA	Ke, Xian-Sheng,et al."Ytterbium(III) Porpholactones: beta-Lactonization of Porphyrin Ligands Enhances Sensitization Efficiency of Lanthanide Near-Infrared Luminescence".CHEMISTRY-A EUROPEAN JOURNAL 20.15(2014):4324-4333.