Enzymatically Polymerized Organic Conductors on Model Lipid Membranes

Area of Science:

• Bioelectronic Engineering
• Materials Science
• Neuroscience

Background:

• Seamless integration of biological systems and electrical components is crucial for neurological disorder research and therapy.
• Conjugated polymers offer potential for bioelectronic systems due to their charge transport capabilities.
• Enzymatically polymerized conductive wires show promise for next-generation neural monitoring and modulation devices.

Purpose of the Study:

• To demonstrate enzyme-mediated polymerization of thiophene-based monomers on a synthetic lipid bilayer.
• To investigate the interaction of these conducting polymers with a cell membrane model.
• To assess the potential of these materials for in vivo neural therapeutics.

Main Methods:

• Enzyme-mediated polymerization of two thiophene-based monomers.
• Utilizing a synthetic lipid bilayer supported on a gold (Au) surface.
• Microgravimetric studies to analyze polymer-lipid bilayer interactions.
• Characterization of electrical and viscoelastic properties of the resulting polymers.

Main Results:

• Successful in situ polymerization of conducting polymer films on a synthetic lipid bilayer.
• Insights into the interaction between conducting polymers and the lipid bilayer model.
• Demonstration of favorable electrical and viscoelastic properties of the self-organizing polymers.

Conclusions:

• Enzyme-mediated polymerization is a viable method for creating conductive polymers on biological interfaces.
• These conducting polymers exhibit properties suitable for mimicking cell membrane interactions.
• The developed materials hold potential for novel in vivo neural therapeutic applications.