Abstract
A newly developed spectrofluorometric method is based on the fabrication of an optical cyanopyridine derived sensor, 4-(6-diaryl)-2-oxo -1,2-dihydropyridine-3-carbonitrile using microwave irradiation. The fluorescence intensity of the proposed chemo sensor was obviously quenched in DMSO owing to the presence of UO22+ ions at lambda(ex)/lambda(em) = 320/360 nm. The quenching effect of the cyano-derivative based sensor was found to be proportional to the concentration of UO22+ ion ranging between 9.60 x 10(-9)-5.28 x 10(-5) mol L-1 with a detection and quantification limits of 1.71 x 10(-11) and 5.2 x 10(-11) mol L-1, respectively.