Abstract
Arrays of 28 kDa nanocrystal gold molecules behave as weakly-coupled molecular solids comprising discrete nanoscale metallic islands separated by insulating ligand barriers. The key parameters which are found to dominate charge transport are (a) the single-electron nanocrystal charging energy, governed by the core diameter, the dielectric properties of the passivating ligands and classical electrostatic coupling between neighbouring cores; (b) the inter-nanocrystal tunnel barrier resistance that arises from the insulating nature of the ligand bilayers that separate the cores; and (c) the dimensionality of the network of current-carrying paths.
Original language | English |
---|---|
Pages (from-to) | 4403-4407 |
Number of pages | 5 |
Journal | Journal of Materials Chemistry |
Volume | 15 |
Issue number | 41 |
DOIs | |
Publication status | Published - 1 Jan 2005 |