A Protein-Based Free-Standing Proton-Conducting Transparent Elastomer for Large-Scale Sensing Applications

Area of Science:

• Materials Science
• Biomaterials Engineering
• Polymer Chemistry

Background:

• The demand for sustainable and environmentally friendly materials is increasing in modern research.
• Natural resources offer potential for creating eco-friendly materials, but often lack the performance of synthetic counterparts.
• Conductive polymers typically rely on synthetic materials, posing environmental challenges.

Purpose of the Study:

• To develop a high-performance, sustainable conductive polymer using natural resources.
• To explore the use of proteins as building blocks for advanced functional materials.
• To demonstrate a cost-effective and energy-efficient polymerization process.

Main Methods:

• Utilized bovine serum albumin (BSA), an affordable natural protein, as a primary component.
• Employed natural protein crosslinkers for spontaneous and energy-efficient polymerization.
• Fabricated a free-standing, transparent, and highly elastic polymer film.

Main Results:

• Achieved proton conductivity comparable to synthetic conductive polymers.
• Demonstrated a scalable and low-cost material production method.
• The resulting elastomer exhibits inherent biodegradability and biocompatibility.

Conclusions:

• Protein-inspired conductive polymers offer a sustainable alternative to synthetic materials.
• The developed material is suitable for large-scale production and biomedical applications.
• The material functions effectively as a solid-state interface for sensing electrophysiological signals.