Organic electrochemical transistor incorporating an ionogel as solid state electrolyte for lactate sensing
Curto, Vincenzo F. and Fraser, Kevin J. and Diamond, Dermot and Benito-Lopez, Fernando and Khodagholy, Dion and Gurfinkel, Moshe and Malliaras, George and Owens, Roisin (2012) Organic electrochemical transistor incorporating an ionogel as solid state electrolyte for lactate sensing. In: Smart Surface 2012, 6-9 Mar 2012, Dublin, Ireland.
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Room temperature Ionic liquids (RTILs) have evolved as a new type of solvent for biocatalysis, mainly due to their unique and tunable physical properties. In addition, within the family of organic semiconductor-based sensors, organic electrochemical transistors (OECTs) have attracted particular interest. Here, we present a simple and robust biosensor, based on a OECT, capable of measuring lactic acid using a gel-like polymeric materials that endow RTIL (ionogel) as solid-state electrolyte both to immobilise the enzyme and to serve as a supporting electrolyte. This represents the first step towards the achievement of a fast, flexible, miniaturised and cheap way of measuring lactate concentration in sweat.
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