A novel fluorene-derivative Schiff-base fluorescent sensor for copper (II) in organic media.
CARLOS, Fabiane dos Santos; NUNES, Marcelo Carpes; DE BONI, Leonardo; MACHADO, Guilherme Sippel; NUNES, Fábio S.
CARLOS, Fabiane dos Santos; NUNES, Marcelo Carpes; DE BONI, Leonardo; MACHADO, Guilherme Sippel; NUNES, Fábio S.
 Abstract: A new Schiff-base sensor containing fluorene was synthesized and investigated for determination of metal ions in dimethylsulfoxide solutions. Fluorescence was quenched upon coordination, showing selectivity for Cu(II) over Mn(II), Fe(III), Ni(II), Pd(II), Zn(II), Ca(II), Hg(II), Na(I) and K(I) in a concentration range of 1.00 to 10.0 10-7 mol L-1. Good results were observed for sensor 1 derived from 2- formylpiridine. Benesi-Hilderbrand formalism indicates that the most abundant species formed have 2:1 (metal/ligand) ratio with a calculated biding constant of 1.74 1012 L2 mol 2 in good agreement with the Stern-Volmer constant KSV at 2.26 1012 L2 mol 2. The limit of detection (LOD) for Cu(II) was found to be 0.037 mmol L 1 with a relative standard deviation (RSD) of 3.19% in the copper(II) concentration range of 3.00 to 7.00 10 7 mol L-1. | |
| Journal of Photochemistry and Photobiology A |
| v. 348, p. 41-46 - Ano: 2017 |
| Fator de Impacto: 2,625 |
| http://dx.doi.org/10.1016/j.jphotochem.2017.08.022 |  @article={002848036,author = {CARLOS, Fabiane dos Santos; NUNES, Marcelo Carpes; DE BONI, Leonardo; MACHADO, Guilherme Sippel; NUNES, Fábio S.},title={A novel fluorene-derivative Schiff-base fluorescent sensor for copper (II) in organic media},journal={Journal of Photochemistry and Photobiology A},note={v. 348, p. 41-46},year={2017}} |