Journal
TALANTA
Volume 80, Issue 5, Pages 2093-2098Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2009.11.013
Keywords
Iron(III); Probe; Fluorescence enhancement; Rhodamine
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Funding
- Anhui Science and Technology University
- NSFC [20431010, 20621091, J0630962]
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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 AI(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 x 10(-8) to 7.2 x 10(-6) mol L(-1) with a detection limit of 1.4 x 10(-8) mol L(-1). (C) 2009 Elsevier BM. All rights reserved.
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