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Issue 64, 2017
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A highly selective ratiometric fluorescent probe for the cascade detection of Zn2+ and H2PO4 and its application in living cell imaging

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Abstract

A simple ratiometric sensor (L1) for the cascade detection of Zn2+ and H2PO4 with high selectivity was reported based on the intermolecular charge transfer (ICT) mechanism. This new sensor could distinguish Zn2+ from Cd2+, and features high fluorescence quantum yield with L1 (0.45) and L1–Zn2+ (0.27). There is a good linear relationship between the fluorescence ratio I525 nm/I430 nm upon addition of Zn2+ and the limit of detection (LOD) was evaluated to be 41.0 nM. Furthermore, the in situ prepared L1–Zn2+ complex also displayed good selectivity and ratiometric response for H2PO4 and the detection limit of L1–Zn2+ was found to be 49.0 nM. L1 exhibits permeability and can been applied to the detection of intracellular Zn2+ and H2PO4 in HepG-2 cells.

Graphical abstract: A highly selective ratiometric fluorescent probe for the cascade detection of Zn2+ and H2PO4− and its application in living cell imaging

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Publication details

The article was received on 20 Jul 2017, accepted on 12 Aug 2017 and first published on 21 Aug 2017


Article type: Paper
DOI: 10.1039/C7RA08020D
RSC Adv., 2017,7, 40615-40620
  • Open access: Creative Commons BY license
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    A highly selective ratiometric fluorescent probe for the cascade detection of Zn2+ and H2PO4 and its application in living cell imaging

    K. Du, S. Niu, L. Qiao, Y. Dou, Q. Zhu, X. Chen and P. Zhang, RSC Adv., 2017, 7, 40615
    DOI: 10.1039/C7RA08020D

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