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题名:
A molecular imprinting-based turn-on Ratiometric fluorescence sensor for highly selective and sensitive detection of 2,4-dichlorophenoxyacetic acid (2,4-D)
作者: Wang, XY; Yu, JL; Wu, XQ; Fu, JQ; Kang, Q; Shen, DZ; Jinhua LI(李金花); Chen, LX
刊名: BIOSENSORS & BIOELECTRONICS
ISSN号: 0956-5663
出版日期: 2016-07-15
卷号: 81, 页码:438-444
关键词: Molecular imprinting ; Fluorescence turn-on ; Photoinduced electron transfer ; Ratiometric fluorescence ; 2,4-Dichlorophenoxyacetic acid (2,4-D) ; Water sample
DOI: 10.1016/j.bios.2016.03.031
产权排序: [Wang, Xiaoyan; Yu, Jialuo; Kang, Qi; Shen, Dazhong] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Functionalized Probes Chem, Key Lab Mol & Nano Probes,Minist Educ,Shandong Pr, Jinan 250014, Peoples R China; [Wang, Xiaoyan; Yu, Jialuo; Wu, Xiaqing; Fu, Junqing; Li, Jinhua; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Wang, Xiaoyan] Binzhou Med Univ, Sch Pharm, Yantai 264003, Peoples R China
通讯作者: Shen, DZ (reprint author), Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Functionalized Probes Chem, Key Lab Mol & Nano Probes,Minist Educ,Shandong Pr, Jinan 250014, Peoples R China. ; Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. dzshen@sdnu.edu.cn ; lxchen@yic.ac.cn
作者部门: 中科院海岸带环境过程与生态修复重点实验室
英文摘要: A novel molecular imprinting-based turn-on ratiometric fluorescence sensor was constructed via a facile sol-gel polymerization for detection of 2,4-dichlorophenoxyacetic acid (2,4-D) on the basis of photo induced electron transfer (PET) by using nitrobenzoxadiazole (NBD) as detection signal source and quantum dots (QDs) as reference signal source. With the presence and increase of 2,4-D, the amine groups on the surface of QDs@SiO2 could bind with 2,4-D and thereby the NBD fluorescence intensities could be significantly enhanced since the PET process was inhibited, while the QDs maintained constant intensities. Accordingly, the ratio of the dual-emission intensities of green NBD and red QDs could be utilized for turn-on fluorescent detection of 2,4-D, along with continuous color changes from orange-red to green readily observed by the naked eye. The as-prepared fluorescence sensor obtained high sensitivity with a low detection limit of 0.14 mu M within 5 min, and distinguished recognition selectivity for 2,4-D over its analogs. Moreover, the sensor was successfully applied to determine 2,4-D in real water samples, and high recoveries at three spiking levels of 2,4-D ranged from 95.0% to 110.1% with precisions below 4.5%. The simple, rapid and reliable visual sensing strategy would not only provide potential applications for high selective ultratrace analysis of complicated matrices, but also greatly enrich the research connotations of molecularly imprinted sensors. (C) 2016 Elsevier B.V. All rights reserved.
研究领域[WOS]: Biophysics ; Biotechnology & Applied Microbiology ; Chemistry ; Electrochemistry ; Science & Technology - Other Topics
项目资助者: National Natural Science Foundation of China(21575080 ; Research Fund for the Doctoral Program of Higher Education of China(20113704110003) ; Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry ; 21275091 ; 21275158 ; 21477160)
关键词[WOS]: SOLID-PHASE MICROEXTRACTION ; GAS-CHROMATOGRAPHY ; WATER SAMPLES ; QUANTUM DOTS ; TRACE DETERMINATION ; GOLD NANOCLUSTERS ; MASS-SPECTROMETRY ; HERBICIDES ; POLYMER ; NANOPARTICLES
文章类型: Article
收录类别: SCI
语种: 英语
WOS记录号: WOS:000374811800060
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/17053
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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作者单位: 1.Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Functionalized Probes Chem, Key Lab Mol & Nano Probes,Minist Educ
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat
3.Binzhou Med Univ, Sch Pharm

Recommended Citation:
Wang, XY,Yu, JL,Wu, XQ,et al. A molecular imprinting-based turn-on Ratiometric fluorescence sensor for highly selective and sensitive detection of 2,4-dichlorophenoxyacetic acid (2,4-D)[J]. BIOSENSORS & BIOELECTRONICS,2016,81:438-444.
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