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Issue 22, 2018
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Solvent directed selective and sensitive fluorescence detection of target ions using a coumarin–pyridine probe

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Abstract

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.

Graphical abstract: Solvent directed selective and sensitive fluorescence detection of target ions using a coumarin–pyridine probe

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Publication details

The article was received on 08 Sep 2018, accepted on 24 Sep 2018 and first published on 25 Sep 2018


Article type: Paper
DOI: 10.1039/C8AN01736K
Citation: Analyst, 2018,143, 5583-5588
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    Solvent directed selective and sensitive fluorescence detection of target ions using a coumarin–pyridine probe

    Y. Xie, W. Cheng, B. Jin, C. Liang, Y. Ding and W. Zhang, Analyst, 2018, 143, 5583
    DOI: 10.1039/C8AN01736K

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