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Title: A hydrogel capsule as gate dielectric in flexible organic field-effect transistors

A jellified alginate based capsule serves as biocompatible and biodegradable electrolyte system to gate an organic field-effect transistor fabricated on a flexible substrate. Such a system allows operating thiophene based polymer transistors below 0.5 V through an electrical double layer formed across an ion-permeable polymeric electrolyte. Moreover, biological macro-molecules such as glucose-oxidase and streptavidin can enter into the gating capsules that serve also as delivery system. An enzymatic bio-reaction is shown to take place in the capsule and preliminary results on the measurement of the electronic responses promise for low-cost, low-power, flexible electronic bio-sensing applications using capsule-gated organic field-effect transistors.
Authors:
; ; ;  [1] ;  [2] ;  [1] ;  [3]
  1. Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, Bari I-70126 (Italy)
  2. Department of Physics, University of Bari “Aldo Moro”, Via Orabona 4, Bari I-70126 (Italy)
  3. (Italy)
Publication Date:
OSTI Identifier:
22415238
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL materials; Journal Volume: 3; Journal Issue: 1; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALGINATES; CAPSULES; DIELECTRIC MATERIALS; ELECTROLYTES; FIELD EFFECT TRANSISTORS; GLUCOSE; MOLECULES; OXIDASES; POLYCYCLIC SULFUR HETEROCYCLES; POLYMERS; SUBSTRATES; THIOPHENE