| 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
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| 发表期刊 | SENSORS AND ACTUATORS B-CHEMICAL
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| ISSN | 0925-4005 |
| 2018-06-01 | |
| 卷号 | 262页码:810-817 |
| 关键词 | Mercury ions Ratiometric fluorescence Carbon dots-gold nanoclusters Dithiothreitol Water samples |
| 研究领域 | Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation |
| DOI | 10.1016/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 |
| 作者部门 | 海岸带环境工程技术研究与发展中心 |
| 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. |
| 文章类型 | Article |
| 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | SELECTIVE DETECTION ; AQUEOUS-SOLUTION ; HG2+ ; NANOHYBRID ; PROBE ; VISUALIZATION |
| 研究领域[WOS] | Chemistry ; Electrochemistry ; Instruments & Instrumentation |
| WOS记录号 | WOS:000427460600096 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24369 |
| 专题 | 中国科学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 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.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 |
| 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. |
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