A highly selective rhodamine based turn-on optical sensor for Fe3+

被引：46

作者：

Aydin, Ziya ^{[1
]}

Wei, Yibin ^{[1
]}

Guo, Maolin ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Chem & Biochem, UMass Cranberry Hlth Res Ctr, Dartmouth, MA 02747 USA

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2012年 / 20卷

关键词：

Fluorescent sensor; Fe3+; Rhodamine B; Chemosensor; Turn-on; IRON REGULATORY PROTEINS; LABILE IRON; FLUORESCENT; IRON(III); BINDING;

D O I：

10.1016/j.inoche.2012.02.025

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A reversible turn-on sensor (Rh-OH-Rh) which can selectively detect Fe3+ in solution has been developed. The sensor combines two rhodamine moieties with a 3-oxygen Fe3+ receptor to provide excellent selectivity for Fe3+ over a range of biologically relevant metal ions. It binds Fe3+ in a 1:1 stoichiometry with an apparent binding constant 5.2 x 10(6) M-1 (log K = 5.28) in ACN/DMF (9/1 v/v) solution. The sensor displays distinct "on-off" changes in color and fluorescence upon the alteration of free Fe3+ levels in solution with a reversible response and little interference with other biological relevant metal ions. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：93 / 96

页数：4

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