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题名: A colorimetric and ratiometric fluorescence sensor for sensitive detection of fluoride ions in water and toothpaste
作者: Qiu, Bo1, 3; Zeng, Yi1; Cao, Lixia2, 3; Hu, Rui2, 3; Zhang, Xiaohui1; Yu, Tianjun1; Chen, Jinping1; Yang, Guoqiang2, 3; Li, Yi1, 3
刊名: RSC ADVANCES
发表日期: 2016
卷: 6, 期:54, 页:49158-49163
收录类别: SCI
英文摘要: Fluoride is a well-known anion that plays a significant physiological role. Sensitive and quantitative sensing of fluoride is of great importance to public health investigation. A colorimetric and ratiometric fluorescence sensor for fluoride ions based on silyl capped hydroxylpyrenealdehyde is designed and synthesized. The sensor detects fluoride ions through the desilylation mediated by fluoride ions and the consequent spectral change of the pyrene derivative. A significant absorption change from 420 to 523 nm in the visual region and a fluorescence shift from 492 to 603 nm can be observed upon addition of fluoride ions of tens of ppb, enabling direct observation with the bare eye. Based on the ratiometric fluorescence with up to 255-fold enhancement, the sensor can rapidly and selectively detect F- in water with a limit as low as 2.7 ppb, and furthermore, the sensor is successfully applied for determining the levels of F- in commercially available toothpaste.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35782
Appears in Collections:光化学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem & Phys, Key Lab Photochem Convers & Optoelect Mat Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Photochem Inst Chem, BNLMS, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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