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题名: Synthesis and time-resolved fluorimetric application of a europium chelate-based phosphorescence probe specific for singlet oxygen
作者: Song, B;  Wang, GL;  Tan, MQ;  Yuan, JL
刊名: NEW JOURNAL OF CHEMISTRY
发表日期: 2005
DOI: 10.1039/b510611g
卷: 29, 期:11, 页:1431-1438
收录类别: SCI ;  IC
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: A new europium chelate, [4'-(9-anthryl)- 2,2': 6',2 ''-terpyridine-6,6 ''-diyl] bis( methylenenitrilo) tetrakis( acetate)Eu3+ (ATTA-Eu3+), has been designed and synthesized as a highly sensitive and selective time-resolved phosphorescence probe for singlet oxygen ( O-1(2)). The probe can specifically react with O-1(2) to yield its endoperoxide (EP-ATTA-Eu3+) with a great increase of the luminescence quantum yield and a long phosphorescence lifetime of 1.21 ms, which renders the probe favorable to be used for highly sensitive time-resolved luminescence detection of O-1(2). The new phosphorescence probe is highly water soluble with a large stability constant of similar to 10(20) and a wide available pH range at pH > 3. Upon reactions with some reactive oxygen species including hydrogen peroxide, superoxide, hydroxyl radical and O-1(2), the probe shows high specificity for O-1(2). The probe was used for quantitative detection of O-1(2) generated from a MoO42--H2O2 system to give a detection limit of 2.8 nM. Furthermore, the good applicability of the probe was demonstrated by the real-time monitoring of the kinetic process of O-1(2) generation in a horseradish peroxidase (HRP) catalyzed oxidation system of indole-3-acetic acid (IAA) in a weakly acidic buffer and in a photosensitization system of 5,10,15,20-tetrakis(N-methyl-4-pyridyl)-21H, 23H-porphine (TMPyP) in a neutral buffer.
关键词[WOS]: LUMINESCENT LANTHANIDE COMPLEXES ;  HYDROGEN-PEROXIDE ;  BIOLOGICAL-SYSTEMS ;  CHEMICAL SOURCES ;  FLUORESCENCE ;  GENERATION ;  OXIDATION ;  WATER ;  9,10-DIPHENYLANTHRACENE ;  CHEMILUMINESCENCE
语种: 英语
WOS记录号: WOS:000232846000011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139796
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Analyt Chem, Grad Sch, Dalian 116023, Peoples R China

Recommended Citation:
Song, B,Wang, GL,Tan, MQ,et al. Synthesis and time-resolved fluorimetric application of a europium chelate-based phosphorescence probe specific for singlet oxygen[J]. NEW JOURNAL OF CHEMISTRY,2005,29(11):1431-1438.
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