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题名: Highly selective and sensitive sensing of 2,4,6-trinitrophenol in beverages based on guanidine functionalized upconversion fluorescent nanoparticles
作者: Wang, Wen1;  Li, Haijie1;  Yin, Mingyuan1;  Wang, Kewei1;  Deng, Qiliang1;  Wang, Shuo1;  Zhang, Yukui2
关键词: Upconversion nanoparticles ;  2,4,6-Trinitrophenol ;  Highly sensitive fluorescent sensing ;  Guanidine functionalized materials
刊名: SENSORS AND ACTUATORS B-CHEMICAL
发表日期: 2017-10-29
DOI: 10.1016/j.snb.2017.08.143
卷: 255, 页:1422-1429
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Analytical ;  Electrochemistry ;  Instruments & Instrumentation
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Instruments & Instrumentation
英文摘要: In this study, a highly selective and sensitive fluorescent sensing method based on guanidine functionalized upconversion nanoparticles (UCNPs@GDN) for the detection of 2,4,6-trinitrophenol (TNP) has been developed. The oil-soluble UCNPs (NaYF4: Yb3+, Er3+) with the diameter of 80 nm, which were synthesized by solvo-thermal method, were modified with 3-aminopropyltrimethoxysilane to obtain amine functionalized UCNPs (UCNPs@NH2). The aqueous dispersed UCNPs@GDN was obtained by changing the amine groups of UCNPs@NH2 into guanidine groups with s-ethylisothiourea hydrobromide. When excited by 980 nm wavelength, UCNPs@GDN displayed three emission peaks at 365 nm, 479 nm and 550 nm, respectively. The UCNPs@GDN exhibited strongly fluorescent quenching effect at 365 nm in the presence of TNP, which can be applied to detect TNP based on fluorescence resonance energy transfer (FRET). When the concentration of TNP was in the range of 1 x 10(-8)-1 x 10(-12) M, the quenching intensity of fluorescent signal at 365 nm was linear with the concentration of TNP. The detection limit of 7.78 x 10(-13) M for TNP was achieved. The present method showed high selectivity to TNP. Finally, six kinds of beverage samples containing the target were analyzed, which indicated that this method could be applied to the rapid and sensitive detection of TNP in beverages. (C) 2017 Elsevier B.V. All rights reserved.
关键词[WOS]: METAL-ORGANIC FRAMEWORK ;  PLASMON RESONANCE DETECTION ;  NITROAROMATIC EXPLOSIVES ;  LUMINESCENT SENSOR ;  AQUEOUS-SOLUTION ;  TRINITROPHENOL ;  CHEMOSENSORS ;  SPECTROMETRY ;  NITROGEN ;  COMPLEX
语种: 英语
WOS记录号: WOS:000414319900032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149758
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.Tianjin Univ Sci & Technol, Coll Chem Engn & Mat Sci, Key Lab Food Nutr & Safety, Minist Educ,Tianjin Key Lab Food Nutr & Safety, Tianjin 300457, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Wen,Li, Haijie,Yin, Mingyuan,et al. Highly selective and sensitive sensing of 2,4,6-trinitrophenol in beverages based on guanidine functionalized upconversion fluorescent nanoparticles[J]. SENSORS AND ACTUATORS B-CHEMICAL,2017,255:1422-1429.
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