Study of a water‐soluble fluorescent sensor based on the Eu(III) pefloxacin complex. (5th August 2016)

• Record Type: Journal Article
• Authors: Wen, Chaohao; Yang, Jinglian; Zeng, Zhi; Gao, Jinwei; Zheng, Yuhui
• Is Part Of: Luminescence. Volume 32:Number 3(2017)
• Page Start: 382
• Page End: 386
• Publication Date: 2016-08-05
• Subjects: europium -- optical -- pH dependence -- sensor; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.3190
• Languages: English
• ISSNs: 1522-7235

Abstract

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 Cu 2+ or Fe 3 + . This general modular route will permit easy detection and the concept can be extended to a variety of quinolones for sensing purposes.