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  • Title: Study of a water-soluble fluorescent sensor based on the Eu(III) pefloxacin complex.
    Author: Wen C, Yang J, Zeng Z, Gao J, Zheng Y.
    Journal: Luminescence; 2017 May; 32(3):382-386. PubMed ID: 27491804.
    Abstract:
    The antibiotic type organic structure pefloxacin binds well with europium (III) ions as a useful scaffold for assembling optical probes and allows energy transfer from ligand to metal ions through coordination linkages. This water-soluble chemosensor demonstrated significant 'off-on (red)' changes from an alkaline to a neutral environment (pH 14-8). The emission changed from red to blue under acidic conditions (pH 7-2). The whole process was completely reversible and effective within the pH range 2 to 14. Moreover, this probe system exhibited distinct luminescence quenching upon the addition of Cu2+ or Fe3+ . This general modular route will permit easy detection and the concept can be extended to a variety of quinolones for sensing purposes.
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