Effect of Ligand Shell Structure on the Interaction between Monolayer-Protected Gold Nanoparticles

Here we present a comparative analysis of two types of equally monodisperse gold nanoparticles (similar to 8 nm in diameter), one coated only with dodecanethiol ligands and the other coated with a mixture of dodecanethiol and 4-methylbenzenethiol ligands. The former particles ('homoligand') have a homogeneous coating, while the latter ones ('rippled') show a striated structure composed of phase-separated ribbon-like domains of alternating composition. A combined scanning tunneling and transmission electron microscopy study shows that homoligand nanoparticles interdigitate into one another less than rippled particles and readily form hexagonally packed supracrystals, while rippled particles are trapped in more disordered 'glassy' arrangements.


Published in:
Journal of Physical Chemistry C, 112, 16, 6279-6284
Year:
2008
Publisher:
American Chemical Society
ISSN:
1932-7447
Keywords:
Laboratories:




 Record created 2011-06-06, last modified 2018-03-17


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)