| dc.description.abstract | The growing interests in nanomaterials stem from remarkable properties arising from
reduced dimensionality. On-surface synthesis utilizes surface/nanoscale science techniques to
design and make nanomaterials through a bottom-up approach. The overall research objective of
the present thesis was to create and characterize different molecular nanostructures on surfaces,
and to investigate the chemical phenomena involved in the process. This research reports the
formation of a variety of nanomaterials including self-assembled monolayers (SAMs) and surface-
confined self-assembled molecular networks (SAMNs) on Au(111) and Ag(111).
The nanoscale formation of SAMs on Au(111)/mica was performed through solution
chemistry methods to anchor thiol molecules to gold surface atoms. Three thiols with different
alkyl chain and terminating functional group (carboxyl, trimethylammonium) were studied to form
SAMs on Au(111)/mica. Investigated by scanning tunneling microscopy (STM) and X-ray
photoelectron spectroscopy (XPS), the thiolated SAMs with the end group of a tertiary ammonium
serve as a stable molecular scaffold. The thiolated SAM was further studied for the adsorption of
a stable prototype organic radical, Tris(8-carboxyl-2,2,6,6-tetra(2-(1-hydroxyethyl))-benzo[1,2-
d:4,5-d’]bis(dithiole-4-yl)methyl sodium salt, known as OX063, interacting with the carboxyl
groups of OX063. Our findings can be used to create spin-based materials for future integration
in devices. This will create the foundation for future determination of how the characteristic of
spin sites might change depending on whether they are surrounded by other molecules in solutions,
directly placed on the surface, or located with a distance to the surface. [...] | en_US |
