Ultra-sensitive fluorescent and colorimetric detection of UO22+based on dual enzyme-free amplification strategies
文献类型：期刊论文
| 作者 | Yun, Wen1; Wu, Hong1; Liu, Xingyan1; Zhong, Haixia1; Fu, Min1; Yang, Lizhu2; Huang, Yu3
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| 刊名 | Sensors and Actuators, B: Chemical
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| 出版日期 | 2018 |
| 卷号 | 255页码:1920-1926 |
| ISSN号 | 09254005 |
| DOI | 10.1016/j.snb.2017.08.205 |
| 英文摘要 | A novel fluorescent and colorimetric strategy with enzyme-free dual amplification was developed for ultra-sensitively detection of uranyl in river waters samples. The enzyme-strand recycling and hairpin catalytic assembly (HCA) reaction were used as dual enzyme-free amplification strategies. Three hairpins labeled with fluorophore can absorb on the surface of gold nanoparticles (AuNPs) to prevent them from aggregation in salt solution and quench the fluorescent signal simultaneously. In the presence of UO22+, the HCA reaction between hairpins was induced to form rigid DNA triangles, resulting in the aggregation of AuNPs with a red to blue color change and a “turn-on” fluorescent signal. The limit of detection was as low as 0.1 pM. Importantly, this strategy provided colorimetric and fluorescent dual signals for lower false-positives and higher anti-interference ability. It was successfully used for detection of uranyl in real waters samples. © 2017 Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/8000]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environment and Resources, Chongqing Technology and Business University, Chongqing; 400067, China; 2.School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou; Zhejiang; 325035, China; 3.Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China |
| 推荐引用方式 GB/T 7714 | Yun, Wen,Wu, Hong,Liu, Xingyan,et al. Ultra-sensitive fluorescent and colorimetric detection of UO22+based on dual enzyme-free amplification strategies[J]. Sensors and Actuators, B: Chemical,2018,255:1920-1926. |
| APA | Yun, Wen.,Wu, Hong.,Liu, Xingyan.,Zhong, Haixia.,Fu, Min.,...&Huang, Yu.(2018).Ultra-sensitive fluorescent and colorimetric detection of UO22+based on dual enzyme-free amplification strategies.Sensors and Actuators, B: Chemical,255,1920-1926. |
| MLA | Yun, Wen,et al."Ultra-sensitive fluorescent and colorimetric detection of UO22+based on dual enzyme-free amplification strategies".Sensors and Actuators, B: Chemical 255(2018):1920-1926. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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