一种基于罗丹明的荧光探针，用于测定水溶液中的三价铁离子。
An rhodamine-based fluorescence probe for iron(III) ion determination in aqueous solution.
机构信息
Department of Chemistry, Anhui Science and Technology University, Bengbu, Anhui 233100, PR China.
出版信息
Talanta. 2010 Mar 15;80(5):2093-8. doi: 10.1016/j.talanta.2009.11.013. Epub 2009 Nov 13.
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 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).
一种基于罗丹明的“开-关”型荧光探针，利用客体诱导的结构转变机制，可选择性地用于 Fe(III)的信号传递。在生理 pH 值条件下，该体系在 100%水相体系中对 Fe(III)具有选择性荧光增强响应，对包括 Al(III)、Cd(II)、Fe(II)、Co(II)、Cu(II)、Ni(II)、Zn(II)、Mg(II)、Ba(II)、Pb(II)、Na(I)和 K(I)在内的环境和生物相关金属离子的背景具有高选择性。在最佳条件下，该体系的荧光强度增强与 Fe(III)浓度呈线性关系，从 6.0 x 10(-8)到 7.2 x 10(-6) mol L(-1)，检测限为 1.4 x 10(-8) mol L(-1)。
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