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Issue 91, 2017
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Dopamine coated Fe3O4 nanoparticles as enzyme mimics for the sensitive detection of bacteria

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Abstract

We report a simple and economical colorimetric bacterial sensing strategy with catalytic amplification using dopamine-capped iron oxide (Dop-Fe3O4) nanoparticles. These nanoparticles catalyse the oxidation of a chromogenic substrate in the presence of H2O2 into a green colored product. The catalytic activity of the nanoparticles is inhibited in the presence of bacteria, providing naked eye detection of bacteria at 104 cfu mL−1 and by spectrophotometric detection down to 102 cfu mL−1.

Graphical abstract: Dopamine coated Fe3O4 nanoparticles as enzyme mimics for the sensitive detection of bacteria

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Publication details

The article was received on 12 Sep 2017, accepted on 26 Oct 2017 and first published on 26 Oct 2017


Article type: Communication
DOI: 10.1039/C7CC07149C
Citation: Chem. Commun., 2017,53, 12306-12308
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    Dopamine coated Fe3O4 nanoparticles as enzyme mimics for the sensitive detection of bacteria

    S. Mumtaz, L. Wang, S. Z. Hussain, M. Abdullah, Z. Huma, Z. Iqbal, B. Creran, V. M. Rotello and I. Hussain, Chem. Commun., 2017, 53, 12306
    DOI: 10.1039/C7CC07149C

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