Journal of Photochemistry and Photobiology A: Chemistry 356 (2018) 603–609 Contents lists available at ScienceDirect Journal of Photochemistry and Photobiology A: Chemistry journal homepa ge: www.elsev ier.com/locate/jphotochem An enzyme-free ﬂuorescent probe based on carbon dots – MnO nanosheets for determination of uric acid Mohammad Amjadi*, Tooba Hallaj, Zahra Kouhi Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 5166616471, Iran A R T I C L E I N F O A B S T R A C T Article history: Received 18 December 2017 A turn-on ﬂuorescent probe based on the effect of MnO nanosheets on the ﬂuorescence of sulfur and Received in revised form 28 January 2018 nitrogen co-doped carbon dots (S,N-CDs) is reported for detection of uric acid. MnO nanosheets have Accepted 3 February 2018 several interesting physicochemical properties such as high extinction coefﬁcient and rich redox Available online 5 February 2018 chemistry, which make them an excellent sensing platform. The ﬂuorescence of S,N-CDs efﬁciently turns off in the presence of MnO nanosheets due to the inner ﬁlter effect as well as other quenching Keywords: mechanisms. By adding uric acid to the solution of S,N-CDs–MnO nanosheets, the ﬂuorescence of S,N- MnO nanosheets CDs is
Journal of Photochemistry and Photobiology A: Chemistry – Elsevier
Published: Apr 1, 2018
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