Electro-chemo-biomimetics from conducting polymers: fundamentals, materials, properties and devices

Area of Science:

• Materials Science
• Electrochemistry
• Polymer Science

Background:

• Conjugated conducting polymers (CCPs) are complex materials with electroactive fractions undergoing reversible redox reactions.
• These reactions cause volume changes, accommodating counterions and solvent molecules, similar to intracellular matrices.
• CCPs can be classified into nine families, each with distinct ion exchange mechanisms during doping/dedoping.

Purpose of the Study:

• To review the electropolymerization mechanism of CCPs.
• To highlight the classification of CCPs into nine material families based on their doping/dedoping mechanisms.
• To introduce the development of biomimetic devices based on CCP properties.

Main Methods:

• Review of electropolymerization mechanisms.
• Classification of CCPs based on prevalent ion exchange (anions, cations, protons).
• Characterization of CCPs and devices using electrochemical cells and methodologies.

Main Results:

• Electropolymerization yields both electroactive and non-electroactive fractions.
• CCPs exhibit reversible changes in composition and properties driven by redox reactions.
• Nine distinct CCP families are identified, each with specific doping/dedoping behaviors (p-doping, n-doping, proton exchange).

Conclusions:

• CCPs' reversible, reaction-driven property variations enable biomimetic devices.
• Multifunctional devices mimicking biological organ functions can be developed.
• These Faradaic devices require electrochemical characterization methods.