title: Study of a water-soluble fluorescent sensor based on the Eu(III) pefloxacin complex.
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.
authors: Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, Guangdong Province, People's Republic of China.
authors: Chaohao
authors: C
authors: Wen
authors: School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, Guangdong Province, People's Republic of China.
authors: Jinglian
authors: J
authors: Yang
authors: School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, Guangdong Province, People's Republic of China.
authors: Zhi
authors: Z
authors: Zeng
authors: Institute for Advanced Materials, Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, Guangdong Province, People's Republic of China.
authors: Jinwei
authors: J
authors: Gao
authors: Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, Guangdong Province, People's Republic of China.|School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, Guangdong Province, People's Republic of China.|Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, 510006, Guangdong Province, People's Republic of China.
authors: Yuhui
authors: Y
authors: Zheng
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D015366:Pefloxacin / Q000737:chemistry*; D015363:Quinolones / Q000032:analysis*; D012995:Solubility; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D005456:Fluorescent Dyes; D015363:Quinolones; D014867:Water; D015366:Pefloxacin; D005063:Europium
keywords: europium; optical; pH dependence; sensor