24 research outputs found
Self-assembly of triazatriangulenium-based functional adlayers on Au(111) surfaces
Detailed scanning tunneling microscopy studies of the attachment of freestanding
molecular functions to Au(111) surfaces via self-assembly of functional molecules based
on triazatriangulenium platforms are presented. As shown for molecules with side chains
of different length and phenyl, azobenzyl, or azobenzyl derivatives with different terminal
groups (iodo, cyano, or dimethyl) as functional units, this approach allows the preparation
of very stable, hexagonally ordered adlayers. The intermolecular spacings in these adlayers
are independent of the attached functions with the latter being orientated perpendicular to the
Au surface. Due to their open structure, adlayers of platforms with attached functional groups
exhibit a tendency towards bilayer formation, which can be suppressed by derivatization with
appropriate terminal groups