Use of butyl-methylimidazolium based ionic liquids with different anions in electrolyte-gated organic field-effect transistors

Author

De Tullio, Donato ; Magliulo, Maria ; Colafemmina, Giuseppe ; Manoli, Kyriaki ; Torsi, Luisa ; Palazzo, Gerardo

Author_Institution

Dept. of Chem., Univ. of Bari Aldo Moro, Bari, Italy

fYear

2013

fDate

13-14 June 2013

Firstpage

108

Lastpage

112

Abstract

Butyl-methylimidazolium based ionic liquids with two different anions are suggested as gating electrolytes in field-effect transistors. Thanks to the selection of two anions with different polarity it was possible to evaluate the effect of the ions properties such as the chemical structure and the grade of hydrophobicity on the off-current and on the field-effect mobility. Moreover the occurrence of any electrochemical doping in the organic semiconductor was evaluated in three different drain-source voltage ranges. The bio-compatibility of this class of ionic liquids is well-known and a better understanding of their behaviour could lead towards new application for electrolyte-gated biosensors.

Keywords

biosensors; electrolytes; hydrophobicity; organic field effect transistors; semiconductor doping; anions; bio-compatibility; butyl-methylimidazolium based ionic liquids; drain-source voltage range; electrochemical doping; electrolyte-gated biosensor; electrolyte-gated organic field-effect transistors; field-effect mobility; hydrophobicity; organic semiconductor; Biosensors; Capacitance; Liquids; Logic gates; OFETs; Electrolyte-gated; Ionic liquids; Methylimidazolium; biosensors; organic field-effect transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Sensors and Interfaces (IWASI), 2013 5th IEEE International Workshop on

Conference_Location

Bari

Print_ISBN

978-1-4799-0039-8

Type

conf

DOI

10.1109/IWASI.2013.6576102

Filename

6576102