Article ID Journal Published Year Pages File Type
1243027 Talanta 2010 6 Pages PDF
Abstract

An “off–on” rhodamine-based fluorescence probe for the selective signaling of Fe(III) has been designed exploiting the guest-induced structure transform mechanism. This system shows a sharp Fe(III)-selective fluorescence enhancement response in 100% aqueous system under physiological pH value and possesses high selectivity against the background of environmentally and biologically relevant metal ions including Al(III), Cd(II), Fe(II), Co(II), Cu(II), Ni(II), Zn(II), Mg(II), Ba(II), Pb(II), Na(I), and K(I). Under optimum conditions, the fluorescence intensity enhancement of this system is linearly proportional to Fe(III) concentration from 6.0 × 10−8 to 7.2 × 10−6 mol L−1 with a detection limit of 1.4 × 10−8 mol L−1.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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