A single cotton fiber organic electrochemical transistor for liquid electrolyte saline sensing
2012; Royal Society of Chemistry; Volume: 22; Issue: 45 Linguagem: Inglês
10.1039/c2jm34898e
ISSN1364-5501
AutoresGiuseppe Tarabella, Marco Villani, Davide Calestani, R. Mosca, Salvatore Iannotta, A. Zappettini, Nicola Coppedé,
Tópico(s)Analytical Chemistry and Sensors
ResumoA single natural cotton fiber has been functionalized with poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS) conductive polymer by a simple soaking process and used as a channel of an organic electrochemical transistor (OECT), directly interfaced with a liquid electrolyte in contact with an Ag wire gate. The device shows a stable and reproducible current modulation and has been demonstrated to be very effective for electrochemical sensing of NaCl concentration in water. The single wire cotton fiber OECT results to be a simple and low cost device, which is very attractive for wearable electronics in fitness and healthcare.
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