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Technical Briefs

Deposition of Polypyrrole Onto Bucky Gel for Use in a Biomimetic Artificial Excitable Cell Membrane

[+] Author and Article Information
Christina V. Haden1

Soft Materials Research Laboratory, Department of Mechanical and Aerospace Engineering,  University of Virginia, 122 Engineer’s Way Charlottesville, VA 22904cvh2k@virginia.edu

Donald A. Jordan

Soft Materials Research Laboratory, Department of Mechanical and Aerospace Engineering,  University of Virginia, 122 Engineer’s Way Charlottesville, VA 22904dj8n@virginia.edu

Pamela M. Norris

Soft Materials Research Laboratory, Department of Mechanical and Aerospace Engineering,  University of Virginia, 122 Engineer’s Way Charlottesville, VA 22904pamela@virginia.edu

1

Corresponding author.

J. Nanotechnol. Eng. Med 2(3), 034501 (Jan 09, 2012) (3 pages) doi:10.1115/1.4004307 History: Received March 31, 2011; Revised April 20, 2011; Published January 09, 2012; Online January 09, 2012

A novel and inexpensive bucky gel electrode was investigated for use as the electrode substrate for polypyrrole deposition. Potentiostatic deposition of polypyrrole onto gold and bucky gel electrodes was carried out at +1.2 V versus saturated calomel electrode for 1 h in a standard three-electrode electrochemical cell. The electroactive polypyrrole membrane was successfully deposited onto bucky gel, and its surface morphology studied using scanning electron microscopy. Given the bucky gel’s dual ability to both conduct electricity and ions, this work establishes the first step toward a semisolid ion-gating system to be used in further applications.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 1

Conceptual design for a cell membrane. Polypyrrole grown onto a bucky gel electrode separates upper and lower ionic liquid polymer gel compartments. Upon the application of a voltage, polypyrrole responds by opening (right) or closing (left) to ion flux.

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Figure 2

Chemical structure of pyrrole, the monomer that forms a polypyrrole chain after deposition

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Figure 3

Polypyrrole membrane deposition in a 3-electrode electrochemical cell. Gold wires connect the bucky gel to the Pot/Gal 273A at the working electrode and ground interfaces. A platinum mesh is used as counter-electrode and a saturated calomel electrode for reference.

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Figure 4

Chronoamperometric response of bucky gel and gold electrodes during the deposition of polypyrrole

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Figure 5

Scanning electron microscopy images, all at 10,000× magnification, of bucky gel (left), polypyrrole membrane on gold (center), and bucky gel coated with polypyrrole membrane (right)

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