Preparation of europium complex-conjugated carbon dots for ratiometric fluorescence detection of copper(II) ions

	Preparation of europium complex-conjugated carbon dots for ratiometric fluorescence detection of copper(II) ions
	Ye, Zhiqiang 1; Tang, Rong 1; Wu, Hao 2; Wang, Beibei 2; Tan, Mingqian 2; Yuan, Jingli 1
刊名	new journal of chemistry
	2014-12-01
卷号	38 期号:12 页码:5721-5726
通讯作者	zhiqiangye ; 谭明乾
英文摘要	in this work, by conjugating a europium complex, 4,4'-bis(1 '',1 '',1 '',2 '',2 '',3 '',3 ''-heptafluoro-4 '',6 ''-hexanedion-6 ''-ypchlorosulfo-o-terphenyl-eu3+ (bhhct-eu3+), onto the surface of carbon dots (c-dots), a new type of dual-fluorophore nanoparticle, c-dots-bhhct-eu3+, has been successfully prepared for the ratiometric fluorescence detection of cu2+ ions in aqueous media. the results of transmission electron microscopy (tem) and fluorescence spectroscopy characterization indicate that the nanoparticles are monodisperse, spherical and uniform in size (similar to 8.6 nm in diameter), and have stable and well-resolved dual-wavelength emission properties. under excitation at 337 nm, the composite nanoparticles of c-dots-bhhct-eu3+ exhibit two emission peaks at 410 nm and 615 nm, respectively. upon the addition of cu2+ ions, the emission intensity of the nanoparticles at 615 nm is significantly decreased, white that at 410 nm shows no response to the addition of cu2+ ions. correspondingly, the emission intensity ratio, /(615)//(410), shows a good linearity against the concentration of cu2+ ions. in addition, the investigation results of fluorescence responses of the nanoparticles to different metal ions reveal that the fluorescence response of c-dots-bhhct-eu3+ to cu2+ ions is highly specific without interference from other metal ions. all of the results suggest that the new dual-fluorophore composite nanoparticles could be used as a ratiometric fluorescence probe for the detection of cu2+ ions in aqueous media with high selectivity and sensitivity.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	time-resolved fluoroimmunoassay ; gated luminescence detection ; in-vivo ; nanoparticles ; sensor ; cells ; nanodots ; chelate ; probes ; water
收录类别	SCI
语种	英语
WOS记录号	WOS:000345485000008
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/144008]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Dalian Univ Technol, Sch Chem, State Key Lab Fine Chem, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Div Biotechnol, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Ye, Zhiqiang,Tang, Rong,Wu, Hao,et al. Preparation of europium complex-conjugated carbon dots for ratiometric fluorescence detection of copper(II) ions[J]. new journal of chemistry,2014,38(12):5721-5726.
APA	Ye, Zhiqiang,Tang, Rong,Wu, Hao,Wang, Beibei,Tan, Mingqian,&Yuan, Jingli.(2014).Preparation of europium complex-conjugated carbon dots for ratiometric fluorescence detection of copper(II) ions.new journal of chemistry,38(12),5721-5726.
MLA	Ye, Zhiqiang,et al."Preparation of europium complex-conjugated carbon dots for ratiometric fluorescence detection of copper(II) ions".new journal of chemistry 38.12(2014):5721-5726.