A turn-on fluorescent indicator for citrate with micromolar sensitivity.

作者信息

Burguete M Isabel, Galindo Francisco, Luis Santiago V, Vigara Laura

机构信息

Departamento de Química Inorgánica y Orgánica, Unidad Asociada de Materiales Orgánicos Avanzados, Escuela Superior de Tecnología y Ciencias Experimentales, Universitat Jaume I-CSIC, Avda. Sos Baynat, s/n, E-12071, Castellón, Spain.

出版信息

Dalton Trans. 2007 Sep 28(36):4027-33. doi: 10.1039/b711139h. Epub 2007 Aug 21.

DOI:10.1039/b711139h

PMID:17828363

Abstract

A turn-on fluorescent indicator for citric acid (citrate) has been developed, displaying high emission enhancement (+1500%) and low interference by other carboxylates. The sensor is based on the non-emissive copper(II) complex of a fluorescent amino amide, which, upon addition of citrate decomplexates to yield the emissive ligand. The detection limit estimated for this new chemosensing system is about 0.5 microM. This novel approach to the analysis of citrate constitutes an alternative ca. 10(2)-10(3) times more sensitive than the standard method based on the enzyme citrate lyase.

摘要