Wireless Hazard Badges to Detect Nerve-Agent Simulants

TitleWireless Hazard Badges to Detect Nerve-Agent Simulants
Publication TypeJournal Article
Year of Publication2016
AuthorsZhu, R, Azzarelli, JM, Swager, TM
JournalAngewandte Chemie International Edition
Pagination9662 - 9666

Human exposure to hazardous chemicals can have adverse short- and long-term health effects. In this Communication, we have developed a single-use wearable hazard badge that dosimetrically detects diethylchlorophosphate (DCP), a model organophosphorous cholinesterase inhibitor simulant. Improved chemically actuated resonant devices (CARDs) are fabricated in a single step and unambiguously relate changes in chemiresistance to a wireless readout. To provide selective and readily manufacturable sensor elements for this platform, we developed an ionic-liquid-mediated single walled carbon nanotube based chemidosimetric scheme with DCP limits of detection of 28 ppb. As a practical demonstration, an 8 h workday time weighted average equivalent exposure of 10 ppb DCP effects an irreversible change in smartphone readout.