Format

Send to

Choose Destination
Adv Mater. 2015 Feb 4;27(5):911-6. doi: 10.1002/adma.201403541. Epub 2014 Nov 6.

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

Author information

1
Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, CSGI and INSTM, Via Orabona 4, 70126, Bari, Italy.

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.

KEYWORDS:

Donnan equilibria; biosensors; electrostatic double layers; organic field-effect transistors; sensors

PMID:
25376989
DOI:
10.1002/adma.201403541
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Wiley
Loading ...
Support Center