Molecular Materials/Organic Semiconductors/Organic Covalent Frameworks and 2D Polymers

These highly interesting materials offer great flexibility and tunability by combining molecular building blocks in large assemblies. A recent focus of our group is on organic molecules that are considered in (opto-) electronics applications.
Further reading COFs: Scientific Reports (2023),

Further reading Organic crystals: Phys. Rev. B (2021), npj Comput. Mater. (2022),

Tailoring the electronic structure by functionalization and other approaches of band structure engineering are explored. The capabilities of this approach have been proven to exceed the range of 1 eV for the frontier orbital energies, while the fundamental electronic gap is so far only weakly affected.
Further reading: Nature Commun. (2019), Adv. Funct. Mater. (2020), Nature Mater. (2021)

Additional research is dedicated to interesting open-shell systems.

2D Materials

Graphene and its friends appear in many forms (CVD, mechanical exfoliated, liquid-phase exfoliated, epitaxial, etc.). We have been looking at them from the charge transport perspective including fundamental questions such as weak localization phenomena or quantum Hall effect.
Further reading: EPL 94, 47006 (2011), Phys. Rev. Lett. 110, 086602 (2013), Phys. Rev. B 89, 161401(R) (2014), Adv. Opt. Mater (2020)