Electrochemical polymerization of poly(hydroxymethylated-3,4-ethylenedioxythiophene) (PEDOT-MeOH) on multichannel neural probes
By Yoshida, Takamitsu; Terashima, Nobuyoshi; Niiro, Toru; Nagasawa, Sakae; Ito, Michio; Yagasaki, Hiroshi; Oshida, Yoshiki & Agarwal, Parul
Published in Sensors and Actuators B: Chemical
NULL
2004
Abstract
Electrochemical polymerization of a derivative of 3,4-ethylenedioxythiophene (EDOT), specifically hydroxymethylated EDOT (EDOT-MeOH) which exhibits higher solubility in water than EDOT, was used to modify the surface of gold microfabricated neural probes. Films of varied thickness of the conducting form of PEDOT-MeOH doped with poly(styrene sulfonate) (PSS) were deposited on the surface of the electrodes using different electropolymerization times. Scanning electron microscope (SEM) images revealed that the surface of PEDOT-MeOH/PSS had a rough and nodular morphology which lowered the impedance of the coated electrode over a wide range of frequencies from 100 to 105 Hz. At the biologically relevant frequency of 1 kHz, the lowest impedance magnitude was 10 kΩ. Cyclic voltammetry (CV) demonstrated the intrinsic redox reaction and the increased charge capacity of PEDOT-MeOH/PSS coated electrodes relative to the bare gold electrodes. PEDOT-MeOH doped with the biologically active nonapeptide CDPGYIGSR was also successfully deposited onto the electrodes to attain adherent and uniform coatings.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.