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Facile microwave-assisted synthesis of Ti.sub.3C.sub.2 MXene quantum dots for ratiometric fluorescence detection of hypochlorite
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Facile microwave-assisted synthesis of Ti.sub.3C.sub.2 MXene quantum dots for ratiometric fluorescence detection of hypochlorite
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Facile microwave-assisted synthesis of Ti.sub.3C.sub.2 MXene quantum dots for ratiometric fluorescence detection of hypochlorite
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Journal Article
Facile microwave-assisted synthesis of Ti.sub.3C.sub.2 MXene quantum dots for ratiometric fluorescence detection of hypochlorite
2021
Overview
A dual-channel \"naked-eye\" colorimetric and ratio fluorescent probe has been developed based on titanium carbide quantum dots for the detection of curcumin and hypochlorite (ClO.sup.-). The fluorescence emission of Ti.sub.3C.sub.2 MXene quantum dots (Ti.sub.3C.sub.2 MQDs) is in the range 350-600 nm, and the maximum emission peak is at 430 nm that overlaps with the UV absorption of curcumin at 430 nm to a large extent. This facilitates the fluorescence resonance energy transfer (FRET) between Ti.sub.3C.sub.2 MQDs and curcumin. When ClO.sup.- is added, the phenolic and methoxy groups of curcumin are oxidized to quinones, resulting in the restoration of the fluorescence of Ti.sub.3C.sub.2 MQD. In addition, the probe designed makes it easier to distinguish colors with the naked eye to detect curcumin and ClO.sup.-. The linear detection range of curcumin was 0.05-10 [mu]M, and the detection limit was 20 nM. The linear detection ranges of ClO.sup.- are 25-150 [mu]M and 150-275 [mu]M, and the detection limit is 5 [mu]M. This study is the first report on the determination of curcumin and ClO.sup.- based on Ti.sub.3C.sub.2 MQDs by dual-channel \"naked-eye\" colorimetric and ratio fluorescence method.
Publisher
Springer
Subject
