Electrolyte-gated organic field-effect transistors are successfully used as biosensors to detect binding events occurring at distances from the transistor electronic channel that are much larger than the Debye length in highly concentrated solutions. The sensing mechanism is mainly capacitive and is due to the formation of Donnan's equilibria within the protein layer, leading to an extra capacitance (CDON) in series to the gating system.

Detection beyond Debye's length with an electrolyte-gated organic field-effect transistor

PALAZZO, Gerardo;MAGLIULO, MARIA;INTRANUOVO, FRANCESCA;MULLA, MOHAMMAD YUSUF;FAVIA, Pietro;TORSI, Luisa
2015-01-01

Abstract

Electrolyte-gated organic field-effect transistors are successfully used as biosensors to detect binding events occurring at distances from the transistor electronic channel that are much larger than the Debye length in highly concentrated solutions. The sensing mechanism is mainly capacitive and is due to the formation of Donnan's equilibria within the protein layer, leading to an extra capacitance (CDON) in series to the gating system.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/140646
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