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Issue 36, 2007
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A turn-on fluorescent indicator for citrate with micromolar sensitivity

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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 µM. This novel approach to the analysis of citrate constitutes an alternative ca. 102–103 times more sensitive than the standard method based on the enzyme citrate lyase.

Graphical abstract: A turn-on fluorescent indicator for citrate with micromolar sensitivity

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Publication details

The article was received on 20 Jul 2007, accepted on 02 Aug 2007 and first published on 21 Aug 2007


Article type: Paper
DOI: 10.1039/B711139H
Dalton Trans., 2007, 4027-4033

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    A turn-on fluorescent indicator for citrate with micromolar sensitivity

    M. I. Burguete, F. Galindo, S. V. Luis and L. Vigara, Dalton Trans., 2007, 4027
    DOI: 10.1039/B711139H

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