title: A new fluorescent chemosensor detecting Co2+ and K+ in DMF buffered solution.
abstract: A new fluorescent chemosensor 2-(2-thiophene)imidazo [4,5,f]-1,10-phenanthroline (L) was prepared and characterized. By adding univalent or divalent metal ions such as Na(+), K(+), Mg(2+), Ba(2+), Mn(2+), Fe(2+), Co(2+), Ni(2+), Cu(2+), Ag(+), Zn(2+), Cd(2+) and Hg(2+) ions into the solution of L in DMF under buffered conditions with the working pH ranging from 7.0 to 8.0, we found that L could be used to detect K(+) ratiometricly and it could also be applied to sense Co(2+) with the phenomenon of fluorescence quenching of L. While the response behavior of L was not discernibly affected by other examined metal ions.
authors.affiliation: Faculty of Chemistry and Chemical Engineering, Liaoning Key Laboratory of Applied Chemistry, Bohai University, Jinzhou 121000, People's Republic of China. wangxiuli@bhu.edu.cn
authors.forename: Xiuli
authors.initials: X
authors.lastname: Wang
authors.forename: Wenyan
authors.initials: W
authors.lastname: Zheng
authors.forename: Hongyan
authors.initials: H
authors.lastname: Lin
authors.forename: Guocheng
authors.initials: G
authors.lastname: Liu
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D004126:Dimethylformamide / Q000737:chemistry*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008670:Metals / Q000737:chemistry; D010618:Phenanthrolines / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014466:Ultraviolet Rays
chemical_list: C549936:2-(2-thiophene)imidazo(4,5,f)-1,10-phenanthroline; D005456:Fluorescent Dyes; D007093:Imidazoles; D007477:Ions; D008670:Metals; D010618:Phenanthrolines; D003035:Cobalt; D004126:Dimethylformamide; D011188:Potassium