Due to their technological relevance, proton conductors constitute an important class of materials for further research and development. We have recently discovered bulk proton conductivity in thin films from a cephalopod structural protein. In the solid state, this protein features high conductivities and excellent general electrical figures of merit, which compare favorably to those found for artificial materials. The unique physical and electrical properties of our protein facilitate the demonstration of the first protein-based protonic transistors. In their totality, our findings represent an important step towards the next generation of fully biological proton conducting materials.

Bulk protonic conduction in a cephalopod structural protein

247th National Meeting (2014)

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