Abstract
A tetra-substituted phthalocyanine based on 4-[2-(4-nitrophenoxy)ethoxy]phthalonitrile carrying nitrophenyl group for the sensing of Zn2+ has been prepared and characterized by elemental analysis, FT-IR, 1H and 13C NMR, and MS spectral data. The sensing of Zn2+ is based on the fluorescence quenching of Pc. Both absorbance and fluorescence spectra of ZnPc exhibit distinct changes in visible region in response to treatment with Zn2+ ion in dimethyl sulfoxide. The fluorescence spectrum of the ligand showed quenching in the intensity of the signal at 688 nm for Zn2+. The complex composition of ZnPc was found 1:1 by means of spectrophotometric and spectrofluorimetric titration data. The spectrofluorimetric method showed good sensitivity for Zn2+ with linear range and detection limit of 4.0 × 10−6–4.4 × 10−5 and 2.4×10−7 M, respectively.
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This study was supported by the Research Fund of Karadeniz Technical University.
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Çağlar, Y., Gümrükçüoğlu, N., Saka, E.T. et al. Phthalocyanine-based fluorescent chemosensor for the sensing of Zn (II) in dimethyl sulfoxide-acetonitrile. J Incl Phenom Macrocycl Chem 72, 443–447 (2012). https://doi.org/10.1007/s10847-011-0012-9
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DOI: https://doi.org/10.1007/s10847-011-0012-9