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题名: Core-Shell Nanoarchitectures: A Strategy To Improve the Efficiency of Luminescence Resonance Energy Transfer
作者: Song, Cuihong1;  Ye, Zhiqiang2;  Wang, Guilan2;  Yuan, Jingli1, 2;  Guan, Yafeng1
通讯作者: 袁景利 ;  关亚风
关键词: terbium chelate ;  tetramethylrhodamine ;  core-shell nanoparticle ;  luminescence resonance energy transfer
刊名: ACS NANO
发表日期: 2010-09-01
DOI: 10.1021/nn100820u
卷: 4, 期:9, 页:5389-5397
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 105
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: The development of core-shell nanoparticles has shown a wide range of new applications in the fields of chemistry, bioscience, and materials science because of their improved physical and chemical properties over their single-component counterparts. In the present work, we took the core-shell nanoarchitectures as an example to research the luminescence resonance energy transfer (LRET) process between a luminescent Tb(3+) chelate, N,N,N(1),N(1)-[4`-phenyl-2,2`:6`,2`-terpyridine-6,6`-diyl]bis(methylenenitrilo)tetrakis(acetate)-Tb(3+) (PTTA-Tb(3+)), and an organic dye, 5-carboxytetramethylrhodamine (CTMR). PTTA-Tb(3+) and CTMR were chosen as the donor-acceptor pair of LRET in our model construction because of their effective spectral overlapping. The core shell nanoparticles featuring a CTMR-SiO(2) core surrounded by a concentric PTTA-Tb(3+)-SiO(2) shell were prepared using a reverse microemulsion method. These nanoparticles are spherical, uniform in size, and highly photostable. The results of LRET experiments show that the sensitized emission lifetime of the acceptor in the nanoparticles is significantly prolonged (similar to 246 mu s), which is attributed to the long emission lifetime of the Tb(3+) chelate donor. According to the results of the steady-state and time-resolved luminescence spectroscopy, an energy transfer efficiency of similar to 80% and a large Forster distance between the donor and the acceptor in the core-shell nanoparticles are calculated, respectively. The new core-shell nanoparticles with a high LRET efficiency and long Forster distance enable them to be promising optical probes for a variety of possible applications such as molecular imaging and multiplex signaling.
关键词[WOS]: TIME-RESOLVED FLUORESCENCE ;  SILICA NANOPARTICLES ;  TERBIUM CHELATE ;  QUANTUM DOTS ;  COMPLEXES ;  IMMUNOASSAYS ;  FLUOROMETRY ;  PRINCIPLES ;  ACCEPTOR ;  SENSOR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000282121000054
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103405
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 Instrumentat & Analyt Chem, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Chem, State Key Lab Fine Chem, Dalian 116012, Peoples R China

Recommended Citation:
Song, Cuihong,Ye, Zhiqiang,Wang, Guilan,et al. Core-Shell Nanoarchitectures: A Strategy To Improve the Efficiency of Luminescence Resonance Energy Transfer[J]. ACS NANO,2010,4(9):5389-5397.
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