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Real-time sensing of chemical warfare agents (CWAs) is, today, a crucial topic to prevent lethal effects of a chemical terroristic attack. For this reason, the development of efficient, selective, sensitive, and reversible sensoristic devices, which are able to detect by optical response the ppm levels of these compounds, both in water and in air, is strongly required. Here, we report the design and synthesis of a fluorescent nanosensor, based on carbon nanoparticles covalently functionalized with ethanolamine arms, which exploits the multitopic supramolecular interaction with nerve agents, ensuring highly efficient (log K 6.46) and selective molecular recognition. Moreover, given the aqueous dispersibility of carbon nanoparticles, these nanosensors ensure even higher sensitivity, detecting sub-ppt concentration of nerve agents in water, and sub-ppm level in air by using a common digital camera or a smartphone. Our …
American Chemical Society
Publication date: 
16 Jul 2020

Nunzio Tuccitto, Lorenzo Riela, Agatino Zammataro, Luca Spitaleri, Giovanni Li-Destri, Gianfranco Sfuncia, Giuseppe Nicotra, Andrea Pappalardo, Giacomo Capizzi, Giuseppe Trusso Sfrazzetto

Biblio References: 
Volume: 3 Issue: 8 Pages: 8182-8191
ACS Applied Nano Materials