Imperial College London
Alternate

ProfessorRylieGreen

Faculty of Engineering, Department of Bioengineering

Head of the Department of Bioengineering
 
 
 
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Contact

 

+44 (0)20 7594 0943rylie.green

 
 
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Location

 

3.05Bessemer BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Goding:2017:10.1002/adhm.201601177,
author = {Goding, J and Gilmour, A and Martens, P and Poole-Warren, L and Green, R},
doi = {10.1002/adhm.201601177},
journal = {Advanced Healthcare Materials},
title = {Interpenetrating Conducting Hydrogel Materials for Neural Interfacing Electrodes},
url = {http://dx.doi.org/10.1002/adhm.201601177},
volume = {6},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - © 2017 WILEY-VCH Verlag GmbH  &  Co. KGaA, Weinheim Conducting hydrogels (CHs) are an emerging technology in the field of medical electrodes and brain–machine interfaces. The greatest challenge to the fabrication of CH electrodes is the hybridization of dissimilar polymers (conductive polymer and hydrogel) to ensure the formation of interpenetrating polymer networks (IPN) required to achieve both soft and electroactive materials. A new hydrogel system is developed that enables tailored placement of covalently immobilized dopant groups within the hydrogel matrix. The role of immobilized dopant in the formation of CH is investigated through covalent linking of sulfonate doping groups to poly(vinyl alcohol) (PVA) macromers. These groups control the electrochemical growth of the conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) and subsequent material properties. The effect of dopant density and interdopant spacing on the physical, electrochemical, and mechanical properties of the resultant CHs is examined. Cytocompatible PVA hydrogels with PEDOT penetration throughout the depth of the electrode are produced. Interdopant spacing is found to be the key factor in the formation of IPNs, with smaller interdopant spacing producing CH electrodes with greater charge storage capacity and lower impedance due to increased PEDOT growth throughout the network. This approach facilitates tailorable, high-performance CH electrodes for next generation, low impedance neuroprosthetic devices.
AU  - Goding,J
AU  - Gilmour,A
AU  - Martens,P
AU  - Poole-Warren,L
AU  - Green,R
DO  - 10.1002/adhm.201601177
PY  - 2017///
SN  - 2192-2659
TI  - Interpenetrating Conducting Hydrogel Materials for Neural Interfacing Electrodes
T2  - Advanced Healthcare Materials
UR  - http://dx.doi.org/10.1002/adhm.201601177
VL  - 6
ER  -
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