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Visual Detection of a Nerve Agent Simulant using Chemically Modified Paper Strips and Dye-Assembled Inorganic Nanocomposite

Abstract

Chromogenic probe with oxidized bis-indolyl scaffold has been synthesized for the detection of nerve gas mimicking agent, DCNP (Diethyl cyanophosphonate) at pH 8.0 in water. The mechanism of interaction was proposed as the release of cyanide ion through the indole group mediated hydrolysis of phosphorous-hetero atom bond and thereafter the Michael addition of the liberated CN- ion to the electron deficient C=C bond of the bis-indolyl moiety. This led to a remarkable change in color from red to colorless at ambient condition. Then low-cost, portable paper strips were designed for rapid, on-site vapor phase detection of DCNP without involving any sophisticated instrument or skilled personnel. Finally, dye assembled inorganic nanocomposite material was devised to achieve more sensitive ‘turn-on’ detection of DCNP in water.

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Publication details

The article was received on 24 Jun 2017, accepted on 26 Oct 2017 and first published on 26 Oct 2017


Article type: Paper
DOI: 10.1039/C7AN01058C
Citation: Analyst, 2017, Accepted Manuscript
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    Visual Detection of a Nerve Agent Simulant using Chemically Modified Paper Strips and Dye-Assembled Inorganic Nanocomposite

    N. Dey, S. Jha and S. Bhattacharya, Analyst, 2017, Accepted Manuscript , DOI: 10.1039/C7AN01058C

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