DICP OpenIR
Subject Area物理化学
Preparation of europium complex-conjugated carbon dots for ratiometric fluorescence detection of copper(II) ions
Ye, Zhiqiang1; Tang, Rong1; Wu, Hao2; Wang, Beibei2; Tan, Mingqian2; Yuan, Jingli1; ZhiqiangYe; Tan MQ(谭明乾)
Source PublicationNEW JOURNAL OF CHEMISTRY
2014-12-01
DOI10.1039/c4nj00966e
Volume38Issue:12Pages:5721-5726
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordTIME-RESOLVED FLUOROIMMUNOASSAY ; GATED LUMINESCENCE DETECTION ; IN-VIVO ; NANOPARTICLES ; SENSOR ; CELLS ; NANODOTS ; CHELATE ; PROBES ; WATER
AbstractIn 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.
Language英语
WOS IDWOS:000345485000008
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/144008
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhiqiangYe; Tan MQ(谭明乾)
Affiliation1.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
Recommended Citation
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.,...&谭明乾.(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.
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