title: Europium Luminescence Used for Logic Gate and Ions Sensing with Enoxacin As the Antenna.
abstract: Luminescent lanthanide ion complexes have received increasing attention because of their unique optical properties. Herein, we discovered that the luminescence of europium(III) (Eu(3+)) could be regulated by Ag(+) and SCN(-) in seconds with enoxacin (ENX) as the antenna. Under given conditions, only the simultaneous introduction of Ag(+) and SCN(-) could remarkably enhance the luminescence intensity of Eu(3+)-ENX complexes. This phenomenon has been exploited to design an "AND" logic gate and specific luminescence turn-on assays for sensitively sensing Ag(+) and SCN(-) for the first time. Furthermore, the addition of S(2-) resulted in efficient luminescence quenching of the Eu(3+)/ENX/Ag(+)/SCN(-) system due to the strong affinity between Ag(+) and S(2-). Thus, a new luminescent sensing platform for S(2-) was established, which exhibited excellent selectivity and high sensitivity. S(2-) could be detected within the concentration range of 100 nM to 12.5 μM with a detection limit of 60 nM. Such sensing system features simplicity, rapidity, and flexibility. Moreover, this proposed Eu(3+)-based luminescent assay could be successfully applied in the real environmental water sample analysis.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, Jilin 130022, China.|University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Lixia
authors.initials: L
authors.lastname: Lu
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, Jilin 130022, China.|University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Chuanxia
authors.initials: C
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, Jilin 130022, China.|University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, Jilin 130022, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, Jilin 130022, China.
authors.forename: Xiurong
authors.initials: X
authors.lastname: Yang
mesh_terms: D039301:Computers, Molecular; D015365:Enoxacin / Q000737:chemistry*; D005063:Europium / Q000032:analysis*; D007477:Ions / Q000032:analysis; D060106:Lakes; D008128:Logic; D049449:Luminescence; D008163:Luminescent Measurements; D012834:Silver / Q000737:chemistry; D013440:Sulfides / Q000032:analysis*; D013861:Thiocyanates / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007477:Ions; D013440:Sulfides; D013861:Thiocyanates; D014874:Water Pollutants, Chemical; D015365:Enoxacin; D012834:Silver; D005063:Europium