On-surface, ultra-high vacuum conditions enable two-dimensional polymerizations to be precisely studied—often with submolecular resolution—but these syntheses are typically thermally activated, which can lead to high defect densities and relatively small domain sizes. Now, a self-assembled monolayer of a three-bladed fantrip monomer on alkane-passivated graphite has been covalently crosslinked into a mesoscale-ordered two-dimensional polymer by [4+4] photocycloaddition.
- Lukas Grossmann
- Benjamin T. King
- Markus Lackinger