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An Electrochemical Gelation Method for Patterning Conductive PEDOT:PSS Hydrogels

2019; Volume: 31; Issue: 39 Linguagem: Inglês

10.1002/adma.201902869

1521-4095

Vivian R. Feig, Helen Tran, Minah Lee, Kathy Liu, Zhuojun Huang, Levent Beker, David G. Mackanic, Zhenan Bao,

Neuroscience and Neural Engineering

Abstract Due to their high water content and macroscopic connectivity, hydrogels made from the conducting polymer PEDOT:PSS are a promising platform from which to fabricate a wide range of porous conductive materials that are increasingly of interest in applications as varied as bioelectronics, regenerative medicine, and energy storage. Despite the promising properties of PEDOT:PSS‐based porous materials, the ability to pattern PEDOT:PSS hydrogels is still required to enable their integration with multifunctional and multichannel electronic devices. In this work, a novel electrochemical gelation (“electrogelation”) method is presented for rapidly patterning PEDOT:PSS hydrogels on any conductive template, including curved and 3D surfaces. High spatial resolution is achieved through use of a sacrificial metal layer to generate the hydrogel pattern, thereby enabling high‐performance conducting hydrogels and aerogels with desirable material properties to be introduced into increasingly complex device architectures.