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Bridging the Bio-Electronic Interface with Biofabrication
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Stimuli-enabled zipper-like graphene interface for auto-switchable bioelectronics.

Sachin Mishra1, Md Ashaduzzaman2, Prashant Mishra1

  • 1Biosensors and Bioelectronics Centre, IFM, Linköping University, 58183 Linköping, Sweden; Department of Physics, University of the Free State, Bloemfontein ZA9300, South Africa.

Biosensors & Bioelectronics
|May 3, 2016
PubMed
Summary
This summary is machine-generated.

Researchers developed a smart graphene interface that switches bio-electrocatalysis on and off. This responsive material changes from hydrophilic to hydrophobic, enabling self-controlled biodevices.

Keywords:
Graphene bioelectronicsOn/off-switchable bio-devicesSmart BioelectrocatalysisTriggered interfaces

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Area of Science:

  • Materials Science
  • Biotechnology
  • Electrochemistry

Background:

  • Graphene interfaces offer unique thin-film properties for miniaturized systems.
  • Smart interfaces can reversibly switch between hydrophobic and hydrophilic states.
  • Developing responsive biointerfaces is key for advanced biodevices.

Purpose of the Study:

  • To create a stimuli-responsive graphene oxide/polymer interface.
  • To investigate the on/off-switching capabilities of bio-electrocatalysis.
  • To explore the potential for self-controlled biodevices.

Main Methods:

  • Fabrication of a zipper-like graphene oxide (GrO)/polymer interface using in situ self-assembly.
  • Incorporation of poly(N-isopropylacrylamide-co-diethylaminoethylmethylacrylate) (poly(NIPAAm-co-DEAEMA)) and glucose oxidase (GOx).
  • Testing the interface's response to pH and temperature variations.

Main Results:

  • The GrO/polymer interface demonstrated reversible on/off switching of bio-electrocatalysis.
  • Switching occurred between pH 5 and 8, driven by a hydrophilic-to-hydrophobic phase transition.
  • Bioelectrochemical properties were tunable with temperature changes (20-40°C).

Conclusions:

  • A novel stimuli-encoded zipper-like interface was successfully fabricated.
  • The interface exhibits controllable on/off switching of bio-electrocatalysis.
  • This work paves the way for novel self-controlled biodevices.