ACS Sustainable Chemistry & Engineering · 2020 · 172 citations · 45 references
Natural SciencesBioengineeringChemistryAnalytical ChemistryBiosensorsSensorsChemical SensorsFluorescence SpectroscopyMolecular Probe DevelopmentMolecular SensorsNanomaterial-based BiosensorsPhotophysics Of Fluorescent ProbesAnalytical Detection LimitsElectron TransferFluorescence QuenchingFluorescence SensingFluorescent BiosensingFluorescent ProbesFluorescent SensingNanoparticle-based Probes
On account of the excessive residues and serious detriments, it is imminent to develop an efficient method to determine tetracyclines (TCs) for protecting human health. In this work, a novel ratiometric fluorescence sensor was constructed for TCs based on a powerful boron nitride quantum dot and europium ion (BNQD-Eu3+) system. The blue-emitting BNQDs were synthesized via a facile hydrothermal route using boric acid and urea as precursors. When TCs were presented in the hybrid probe of BNQDs and Eu3+, blue fluorescence of BNQDs was quenched and red fluorescence of Eu3+ was enhanced, which can be attributed to the inner filter effect, photo-induced electron transfer, as well as the antenna effect. Besides, it was confirmed that the proposed sensor possessed good detection limits of 0.019, 0.104, and 0.028 μM for tetracycline (TET), oxytetracycline, and doxycycline, respectively. Additionally, the results of BNQD-Eu3+-based sensing of TET in milk and beef samples showed an insignificant difference from those of liquid chromatography–mass spectrometry. Moreover, the BNQD-Eu3+-based test paper was successfully used in the easy and visual detection of TCs by the naked eyes, indicating the practical applicability of the sensor.
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Yang Yang, Chen Zhang, Danlian Huang et al. · Applied Catalysis B: Environmental · 2018 · 680 citations
Fabrication and Luminescence of Monolayered Boron Nitride Quantum Dots
Liangxu Lin, Yaoxian Xu, Shaowei Zhang et al. · Small · 2013 · 244 citations
Natural Sciences, Materials Engineering, Materials Science +11