Abstract
The detection of nerve agent simulants is achieved by the photoinduced electron transfer (PET) mechanism. A "turn-on" fluorescence response upon phosphorylation at 8-hydroxyquinoline of norbornene-based triazolyl functionalized 8-hydroxyquinoline () followed by intramolecular rearrangement provides very intense green emission. The detection limit of polymer () coated paper strips is 25 ppb with instantaneous response.
Highlights
The detection of nerve agent simulants is achieved by the photoinduced electron transfer (PET) mechanism
Chemical warfare agents are produced to kill people in war, and to terrorize people even in peace.1a Among the nerve gas agent family, sarin is the most dangerous and frequently used gas for the attack.1b It is well known that nerve gases act as scavengers of acetylcholinesterase, inhibiting its reactivity in the nervous system, which leads to several neurological disorders and even death.[2]
Selectivity of norbornene-based triazolyl functionalized 8-hydroxyquinoline (NCHQ) towards diethyl chlorophosphate (DCP) was confirmed when no change in emission was observed with addition of other phosphate reagents (Fig. S12, Electronic supplementary information (ESI)†)
Summary
The detection of nerve agent simulants is achieved by the photoinduced electron transfer (PET) mechanism. The detection limit of polymer (PNCHQ) coated paper strips is 25 ppb with instantaneous response. The sensing response of NCHQ and its polymer, PNCHQ, to the simulant of a nerve agent surrogate is highly sensitive and selective.
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