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Development of rhodamine-based fluorescent probes for sensitive detection of Fe3+ in water: spectroscopic and computational investigations

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Abstract

Four novel rhodamine-based fluorescent probes (RE1–RE4) were designed and synthesized for sensitive detection of Fe3+ in water. RE1–RE4 exhibited low detection limits in the range of 18.6 nM to 29.4 nM. In addition, the binding modes of the probes (RE1–RE4) with Fe3+ were proved to be 1 : 1 stoichiometry of the complexes by Job's plot and also their complexing ability was determined using the binding constants (RE2 > RE4 > RE3 > RE1). RE2 was selected to study the proposed binding mechanism with Fe3+ by ESI-MS, 1H NMR and DFT calculations. Furthermore, RE2 was further utilized to detect Fe3+ in living cells and real water samples, indicating its promising prospect in biological and environmental fields.

Graphical abstract: Development of rhodamine-based fluorescent probes for sensitive detection of Fe3+ in water: spectroscopic and computational investigations

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Publication details

The article was received on 23 Oct 2018, accepted on 12 Dec 2018 and first published on 12 Dec 2018


Article type: Paper
DOI: 10.1039/C8NJ05366A
Citation: New J. Chem., 2019, Advance Article
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    Development of rhodamine-based fluorescent probes for sensitive detection of Fe3+ in water: spectroscopic and computational investigations

    Z. Wu, Z. Xu, J. Yan, Y. Li, Q. Kou and L. Zhang, New J. Chem., 2019, Advance Article , DOI: 10.1039/C8NJ05366A

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