Prof. Dmytro Perepichka

Department of Chemistry, McGill University, Montreal, Canada

Abstract: 

Delocalized electronic states in graphene and other 2D inorganic materials give rise to various quantum phenomena that underpin their unique transport (conductive) properties. In principle, some of these properties could be harvested in organic 2D p-conjugated polymers. 

This presentation will deal with the design 2D p-conjugation in organic materials, their synthesis– as individual monolayers by surface-templated polymerization and as stacked multilayer materials, a.k.a. Covalent Organic Frameworks (COFs), and exploration of their electronic properties. 

I will discuss the polaron formation in 2D polymers and COFs via chemical doping, and showcase the application of COF films and nanoparticles as semiconducting heterojunctions capable of solar energy harvesting in photovoltaic devices and in photocatalytic CO₂ reduction systems.