Conducting Polymer Microelectrodes Anchored to Hydrogel Films

Yuichiro Ido; Daisuke Takahashi; Masato Sasaki; Kuniaki Nagamine; Takeo Miyake; Piotr Jasinski; Matsuhiko Nishizawa

doi:10.1021/mz2002406

Conducting Polymer Microelectrodes Anchored to Hydrogel Films

ACS Macro Lett. 2012 Mar 20;1(3):400-403. doi: 10.1021/mz2002406. Epub 2012 Feb 28.

Authors

Yuichiro Ido¹, Daisuke Takahashi¹, Masato Sasaki¹, Kuniaki Nagamine^{1

2}, Takeo Miyake^{1

2}, Piotr Jasinski³, Matsuhiko Nishizawa^{1

2}

Affiliations

¹ Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan.
² JST-CREST, Sanbancho, Chiyoda-ku, Tokyo 102-0075, Japan.
³ Faculty of Electronics, Telecommunication and Informatics, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland.

PMID: 35578510
DOI: 10.1021/mz2002406

Abstract

We report the fabrication of totally organic hydrogel-based microelectrodes of poly(3,4-ethylenedioxythiophene) (PEDOT), which exhibit a lowered sheet resistivity of about 100 Ω/□. The preparation process starts with the electrodeposition of conductive PEDOT (ca. 20 S cm^-1) on Pt microelectrodes. After laminating hydrogels onto the PEDOT-modified Pt electrode substrates, a second PEDOT (low conductivity) layer was electrodeposited to anchor the first PEDOT film to the hydrogel. Finally, the hydrogel sheet with PEDOT micropatterns was peeled off by taking advantage of the electroactuation property of PEDOT. The process proved to be versatile, allowing the use of most natural and synthetic hydrogels including agarose, collagen, polyacrylamide, and so on.