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学科主题: 物理化学
题名: A novel core-satellite CdTe/Silica/Au NCs hybrid sphere as dual-emission ratiometric fluorescent probe for Cu2+
作者: Wang, Yan-Qin1, 2, 3;  Zhao, Tong1, 2;  He, Xi-Wen1, 2;  Li, Wen-You1, 2;  Zhang, Yu-Kui1, 2, 4
通讯作者: 李文友
关键词: Core-satellite ;  CdTe/Silica/Au NCs ;  Hybrid sphere ;  Ratiometric fluorescent probe ;  Cu2+
刊名: BIOSENSORS & BIOELECTRONICS
发表日期: 2014-01-15
DOI: 10.1016/j.bios.2013.07.028
卷: 51, 期:1, 页:40-46
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biophysics ;  Biotechnology & Applied Microbiology ;  Chemistry, Analytical ;  Electrochemistry ;  Nanoscience & Nanotechnology
研究领域[WOS]: Biophysics ;  Biotechnology & Applied Microbiology ;  Chemistry ;  Electrochemistry ;  Science & Technology - Other Topics
英文摘要: Herein, we synthesized a novel core-satellite CdTe/Silica/Au NCs hybrid sphere by covalently linking the separately synthesized highly fluorescent bovine serum albumin (BSA) stabilized gold nanoclusters (Au@BSA NCs) to the surface of the amino functionalized CdTe@SiO2 spheres by using the EDC chemistry. Numerous "satellites" of Au NCs were linked on the surface of the CdTe@SiO2 by the way of amide bonding. The synthesized dual-emission hybrid spheres were further characterized by the transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), UV-vis absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy, photoluminescence (PL), etc. Finally, the CdTe/Silica/Au NCs hybrid spheres were developed as ratiometric fluorescence probe for the determination of Cu2+ with high sensitivity and selectivity. The fluorescence intensity ratio (F-545 nm/F-655 mn) of the probe against the concentration of Cu2+ showed a good linear relationship from 6.0 x 10(-7) mol L-1 to 100.0 x 10(-7) mol L-1. It showed an excellent reproducibility (0.67% relative standard deviation for 10 replicate measurements of Cu2+ at 40.0 x 10(-7) mol L-1) and low detection limit (4.1 x 10(-7) mol L-1). Furthermore, the ratiometric fluorescent probe was successfully applied in the determination of Cu2+ in vegetable samples with satisfactory results. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: QUANTUM DOTS ;  GOLD NANOCLUSTERS ;  SILICA NANOPARTICLES ;  ENERGY-TRANSFER ;  LIVING CELLS ;  COPPER IONS ;  CLUSTERS ;  SENSOR ;  TEMPERATURE ;  SELECTIVITY
语种: 英语
WOS记录号: WOS:000326905500007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144464
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.Nankai Univ, State Key Lab Med Chem Biol, Tianjin 300071, Peoples R China
2.Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
3.Taiyuan Univ Technol, Taiyuan 030024, Peoples R China
4.Chinese Acad Sci, Natl Chromatog Res & Anal Ctr, Dalian Inst Chem Phys, Dalian 116011, Peoples R China

Recommended Citation:
Wang, Yan-Qin,Zhao, Tong,He, Xi-Wen,et al. A novel core-satellite CdTe/Silica/Au NCs hybrid sphere as dual-emission ratiometric fluorescent probe for Cu2+[J]. BIOSENSORS & BIOELECTRONICS,2014,51(1):40-46.
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