TY - JOUR
T1 - New gallium(III) corrole complexes as colorimetric probes for toxic cyanide anion
AU - Santos, Carla I. M.
AU - Oliveira , Elisabete
AU - Barata, Joana F. B.
AU - Faustino, M. Amparo F.
AU - Cavaleiro, Jose A. S.
AU - Neves, M. Graça P. M. S.
AU - Lodeiro, Carlos
N1 - Sem PDF.
PY - 2014/6
Y1 - 2014/6
N2 - Demand for new colorimetric sensors for toxic anions has widely increased in the last ten years, becauseit is an inexpensive technique, in which the analyte is naked-eye detectable. Regarding this issue, twonew corrole derivatives 2 and 3 were successfully synthetized and characterized by elemental analysis,1H and 19F-NMR, MALDI-TOF-MS, UV–Vis absorption and emission spectra. b-Vinyl-corrole 1 wasprepared by the Wittig reaction of b-formyl-corrole with phosphorus ylide. Subsequent treatment ofb-vinyl-corrole with dimethyl acetylenedicarboxylate afforded compounds 2 and 3. The sensorial abilityof the two new corrole derivatives towards fluoride, cyanide, acetate and phosphate anions was carriedout by absorption and emission spectroscopy. Compound 2 shows to be colorimetric to cyanide, whereasa change of colour from green to colourless was visualized. In addition the highest association constantswere obtained for compounds 2 and 3 in the presence of cyanide that are able to quantify a minor amountof cyanide (ca. 1.00 lM).
AB - Demand for new colorimetric sensors for toxic anions has widely increased in the last ten years, becauseit is an inexpensive technique, in which the analyte is naked-eye detectable. Regarding this issue, twonew corrole derivatives 2 and 3 were successfully synthetized and characterized by elemental analysis,1H and 19F-NMR, MALDI-TOF-MS, UV–Vis absorption and emission spectra. b-Vinyl-corrole 1 wasprepared by the Wittig reaction of b-formyl-corrole with phosphorus ylide. Subsequent treatment ofb-vinyl-corrole with dimethyl acetylenedicarboxylate afforded compounds 2 and 3. The sensorial abilityof the two new corrole derivatives towards fluoride, cyanide, acetate and phosphate anions was carriedout by absorption and emission spectroscopy. Compound 2 shows to be colorimetric to cyanide, whereasa change of colour from green to colourless was visualized. In addition the highest association constantswere obtained for compounds 2 and 3 in the presence of cyanide that are able to quantify a minor amountof cyanide (ca. 1.00 lM).
KW - Chemosensor
KW - Colorimetric
KW - Corrole
KW - Cyanide
KW - Fluorescence
U2 - 10.1016/j.ica.2013.09.049
DO - 10.1016/j.ica.2013.09.049
M3 - Article
SN - 0020-1693
VL - 417
SP - 148
EP - 154
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
ER -