  We present a microscopic theory that describes the ordering of two distinct
ligands on the surface of a faceted nanoparticle. The theory predicts that when
one type of ligand is significantly bulkier than all others, the larger ligands
preferentially align themselves along the edges and vertices of the
nanoparticle. Monte Carlo simulations confirm these predictions. We show that
the intrinsic conformational entropy of the ligands stabilizes this novel
edge-aligned phase.
