BOTTOM-UP ASSEMBLY HELPS LOCALIZE ELECTRONIC STATES IN NANOPOROUS GRAPHENE

摘要

Of all the intriguing graphene-based materials, nanoporous graphene's ability to act as both a molecular filter and semiconductor provides an opportunity to construct tunable, electronically sensitive nanosieves. However, top-down methods of introducing pores into graphene not only give little control over pore size and location but also leave the final material as a semimetal. Conversely, while most bottom-up methods yield a semiconducting result, their wide band gap can make applications difficult. Steven Louie, Felix Fischer, Michael Crommie, and co-workers' new bottom-up method of producing nanoporous graphene results in a controlled structure that contains a unique low-energy band of states physically localized around the edges of the pores(DOI:10.1021/jacs.0c05235).