Ratiometric fluorescence sensor based on dithiothreitol modified carbon dots-gold nanoclusters for the sensitive detection of mercury ions in water samples
Liu, Wen; Wang, Xiaoyan; Wang, Yunqing; Li, Jinhua; Shen, Dazhong; Kang, Qi; Chen, Lingxin
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
ISSN0925-4005
2018-06-01
Volume262Pages:810-817
KeywordMercury ions Ratiometric fluorescence Carbon dots-gold nanoclusters Dithiothreitol Water samples
MOST Discipline CatalogueChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
DOI10.1016/j.snb.2018.01.222
Contribution Rank[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
Department海岸带环境工程技术研究与发展中心
AbstractRatiometric 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.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordSELECTIVE DETECTION ; AQUEOUS-SOLUTION ; HG2+ ; NANOHYBRID ; PROBE ; VISUALIZATION
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS IDWOS:000427460600096
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24369
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
Affiliation1.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;
2.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;
3.Binzhou Med Univ, Sch Pharm, Yantai 264003, Peoples R China
Recommended Citation
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.
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