Fluorescent Sensing of a Nerve Agent Simulant with Dual Emission over Wide pH Range in Aqueous Solution

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A new 1,8-naphthalimide-based fluorescent probe for the detection of diethyl cyanophosphonate, a very common nerve agent simulant, is designed, synthesized, and characterized fully. The probe shows around 50-fold enhancement of fluorescence intensity over other nerve agent simulants. Importantly, the probe is able to work under aqueous conditions in a wide pH range. Two reactive groups, the oxime and the phenol, allow a dual emission with different kinetic reactions. The reaction of diethyl cyanophosphonate with the oxime group occurs in advance; the resulting time response of the fluorescence enhancement is observed within approximately 30 s. After the oxime reaction, then phenol also undergoes a substitution reaction with diethyl cyanophosphonate, resulting in a blue emission. The real application of this new probe is demonstrated through the use of silica plate assays for the detection of diethyl cyanophosphonate in both gas and liquid phases through dual emission channels.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2017-06
Language
English
Article Type
Article
Keywords

CHEMICAL WARFARE AGENTS; CHROMATOGRAPHY-MASS SPECTROMETRY; SELECTIVE CHROMOGENIC DETECTION; ORGANOPHOSPHORUS PESTICIDES; PROBE; MIMICS; SENSORS; OXIMES; DISCRIMINATION; DETOXIFICATION

Citation

CHEMISTRY-A EUROPEAN JOURNAL, v.23, no.32, pp.7785 - 7790

ISSN
0947-6539
DOI
10.1002/chem.201700975
URI
http://hdl.handle.net/10203/224794
Appears in Collection
CH-Journal Papers(저널논문)
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