期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 138, 期 26, 页码 8221-8227出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b03869
关键词
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资金
- National Science Foundation [DMR-1410718]
- JSPS
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1410718] Funding Source: National Science Foundation
Chemical sensors offer opportunities for improving personal security, safety, and health. To enable broad adoption of chemical sensors requires performance and cost advantages that are best realized from innovations in the design of the sensing (transduction) materials. Ideal materials are sensitive and selective to specific chemicals or chemical classes and provide a signal that is readily interfaced with portable electronic devices. Herein we report that wrapping single walled carbon nanotubes with metallo-supramolecular polymers creates sensory devices with a dosimetric (time- and concentration-integrated) increase in electrical conductivity that is triggered by electrophilic chemical substances such as diethylchlorophosphate, a nerve agent simulant. The mechanism of this process involves the disassembly of the supramolecular polymer, and we demonstrate its utility in a wireless inductively powered sensing system based on near-field communication technology. Specifically, the dosimeters can be powered and read wirelessly with conventional smartphones to create sensors with ultratrace detection limits.
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