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Solvent directed selective and sensitive fluorescence detection of target ions using a coumarin-pyridine probe.

A new interesting article has been published in Analyst. 2018 Nov 5;143(22):5583-5588. doi: 10.1039/c8an01736k. and titled:

Solvent directed selective and sensitive fluorescence detection of target ions using a coumarin-pyridine probe.

Authors of this article are:

Xie Y , Cheng W , Jin B , Liang C , Ding Y , Zhang W .

A summary of the article is shown below:

The development of fluorescent probes to selectively and sensitively detect more than one target analyte under a given condition is a challenging task due to the lack of designing strategies. In this paper, we report the utilisation of the solvatochromic properties of a coumarin-pyridine based probe L1 to detect Mg2+ and PPi, respectively, by using different solvents such as acetonitrile, DMF and DMF-HEPES buffered solutions. When acetonitrile was used as the solvent, L1 was weakly fluorescent and showed a selective and sensitive fluorescence “turn on” response towards Mg2+ with a detection limit of 86 nM, while in DMF and DMF-HEPES buffered solutions, L1 was brightly fluorescent and was able to form a non-fluorescent L1-Fe3+ complex. The obtained L1-Fe3+ complex was further determined to be a selective and sensitive fluorescent “turn on” probe for PPi with a detection limit of 94 nM.

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