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Ratiometric fluorescence sensor based on dithiothreitol modified carbon dots-gold nanoclusters for the sensitive detection of mercury ions in water samples

文献类型：期刊论文

作者Liu, Wen; Wang, Xiaoyan; Wang, Yunqing; Li, Jinhua; Shen, Dazhong; Kang, Qi; Chen, Lingxin
刊名SENSORS AND ACTUATORS B-CHEMICAL
出版日期2018-06-01
卷号262页码:810-817
关键词Mercury ions Ratiometric fluorescence Carbon dots-gold nanoclusters Dithiothreitol Water samples
ISSN号0925-4005
DOI10.1016/j.snb.2018.01.222
产权排序[Liu, Wen ; Wang, Xiaoyan ; Shen, Dazhong ; Kang, Qi] Shandong Normal Univ, Shandong Univ, Shandong Prov Key Lab Clean Prod Fine Chem,Minist, Collaborat Innovat Ctr Functionalized Probes, Jinan 250014, Shandong, Peoples R China ; [Liu, Wen ; Wang, Xiaoyan ; Wang, Yunqing ; Li, Jinhua ; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pr, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China ; [Wang, Xiaoyan] Binzhou Med Univ, Sch Pharm, Yantai 264003, Peoples R China
文献子类Article
英文摘要Ratiometric fluorescence sensors can provide more accurate analysis of target objects because of their self-calibration function. Traditional methods often use steps of chemical coupling with two different fluorescent materials as the dual emission source, which make the construction process complicated and hard to control. Here, we report a convenient and effective way to construct a ratiometric fluorescence sensor based on dual-emission carbon dots-gold nanoclusters (C-AuNCs) functionalized with dithiothreitol (DTT) for the sensitive detection of mercury ions (Hg2+) in water samples. As a type of novel nanoparticle, C-AuNCs are synthesized via microwaving a mixture of gold seeds solution and carbon precursor. In the presence of Hg2+, the free thiol group of DTT would attract them around the surface of C-AuNCs, and owing to the strong 5d(10)-5d(10) metallophilic interactions between Hg2+ and Au+, the fluorescence emission at 598 nm is quenched while the emission at 466 nm remains at a constant intensity. Thus, an obvious color change from orange-red to blue under ultraviolet irradiation can be observed by the naked eye. Moreover, the as-prepared fluorescence sensor has high sensitivity with a detection limit of 8.7 nM, and successfully applies to detect Hg2+ in real water samples with satisfactory recoveries at three spiking levels ranging from 95.9 - 103.5%. The good results imply that the developed DTT/C-AuNCs sensor is conducive to trace Hg2+ determination and possesses the great application potential for water-quality monitoring. (C) 2018 Elsevier B.V. All rights reserved.
WOS关键词SELECTIVE DETECTION ; AQUEOUS-SOLUTION ; HG2+ ; NANOHYBRID ; PROBE ; VISUALIZATION
WOS研究方向Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种英语
WOS记录号WOS:000427460600096
资助机构National Natural Science Foundation of China [21575080, 21275091, 21275158, 21477160] ; National Defense Science and Technology Innovation Project of Chinese Academy of Sciences [CXJJ-16M254] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
源URL[http://ir.yic.ac.cn/handle/133337/24369]  
专题烟台海岸带研究所_山东省海岸带环境工程技术研究中心
烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pr, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China;
2.Binzhou Med Univ, Sch Pharm, Yantai 264003, Peoples R China
3.Shandong Normal Univ, Shandong Univ, Shandong Prov Key Lab Clean Prod Fine Chem,Minist, Collaborat Innovat Ctr Functionalized Probes, Jinan 250014, Shandong, Peoples R China;
推荐引用方式
GB/T 7714		 Liu, Wen,Wang, Xiaoyan,Wang, Yunqing,et al. Ratiometric fluorescence sensor based on dithiothreitol modified carbon dots-gold nanoclusters for the sensitive detection of mercury ions in water samples[J]. SENSORS AND ACTUATORS B-CHEMICAL,2018,262:810-817.
APA Liu, Wen.,Wang, Xiaoyan.,Wang, Yunqing.,Li, Jinhua.,Shen, Dazhong.,...&Chen, Lingxin.(2018).Ratiometric fluorescence sensor based on dithiothreitol modified carbon dots-gold nanoclusters for the sensitive detection of mercury ions in water samples.SENSORS AND ACTUATORS B-CHEMICAL,262,810-817.
MLA Liu, Wen,et al."Ratiometric fluorescence sensor based on dithiothreitol modified carbon dots-gold nanoclusters for the sensitive detection of mercury ions in water samples".SENSORS AND ACTUATORS B-CHEMICAL 262(2018):810-817.

入库方式： OAI收割

来源：烟台海岸带研究所

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