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Issue 18, 2017
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C–H oxidation and chelation of a dipyrromethane mediated rapid colorimetric naked-eye Cu(II) chemosensor

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Abstract

Copper(II) ion mediated C–H oxidation of dipyrromethanes (DPMs) to the corresponding dipyrrins followed by complexation invoked the selective sensing of copper(II) ions in aqueous solutions. On the addition of copper, the colour of the DPM solution instantaneously changes from yellow to pink with the detection limit of 0.104 μM measured by absorption spectroscopy, whereas visible colour changes could be observed by the naked eye for concentrations as low as 3 μM.

Graphical abstract: C–H oxidation and chelation of a dipyrromethane mediated rapid colorimetric naked-eye Cu(ii) chemosensor

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Publication details

The article was received on 23 Jun 2017, accepted on 04 Aug 2017 and first published on 04 Aug 2017


Article type: Communication
DOI: 10.1039/C7AN01052D
Citation: Analyst, 2017,142, 3346-3351
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    C–H oxidation and chelation of a dipyrromethane mediated rapid colorimetric naked-eye Cu(II) chemosensor

    R. Rajmohan, K. B. Ayaz Ahmed, S. Sangeetha, V. Anbazhagan and P. Vairaprakash, Analyst, 2017, 142, 3346
    DOI: 10.1039/C7AN01052D

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