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Issue 8, 2018
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A naked-eye fluorescent sensor for copper(II) ions based on a naphthalene conjugate Bodipy dye

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Abstract

A novel naphthalene-Bodipy dye (N-Bodipy) was designed, prepared and characterized. N-Bodipy showed a selective and sensitive recognition toward Cu(II) ions as a fluorescent antenna group in acetonitrile/water over other metal cations. The complexation between Cu(II) ions and N-Bodipy gave a specific color change as well as caused fluorescence quenching under long-wavelength light (365 nm). The remarkable quenching effect in fluorescence intensity centered at 538 nm was only observed in the presence of copper(II) ions. Moreover, the orange color of N-Bodipy solution turned pale-yellow depending on the complexation effect in daylight. The complex stoichiometry was determined using a Job's plot and it was found to be 2 : 1 (ligand/metal). The binding constant was calculated with the Benesi–Hildebrand equation to be 1.39 × 1010 M−1 and the detection limit was 1.28 μM (LOD = 3α/slope, α is the standard deviation) for Cu(II). The data proved that the binding between N-Bodipy and Cu(II) is chemically reversible.

Graphical abstract: A naked-eye fluorescent sensor for copper(ii) ions based on a naphthalene conjugate Bodipy dye

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Publication details

The article was received on 04 Apr 2018, accepted on 13 Jun 2018 and first published on 13 Jun 2018


Article type: Paper
DOI: 10.1039/C8PP00137E
Citation: Photochem. Photobiol. Sci., 2018,17, 1091-1097
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    A naked-eye fluorescent sensor for copper(II) ions based on a naphthalene conjugate Bodipy dye

    C. Baslak and A. N. Kursunlu, Photochem. Photobiol. Sci., 2018, 17, 1091
    DOI: 10.1039/C8PP00137E

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