Multi-dimensional charge transport in supramolecular helical foldamer assemblies.

ABSTRACT: Aromatic foldamers are bioinspired architectures whose potential use in materials remains largely unexplored. Here we report our investigation of vertical and horizontal charge transport over long distances in helical oligo-quinolinecarboxamide foldamers organized as single monolayers on Au or SiO₂. Conductive atomic force microscopy showed that vertical conductivity is efficient and that it displays a low attenuation with foldamer length (0.06 Å^-1). In contrast, horizontal charge transport is found to be negligible, demonstrating the strong anisotropy of foldamer monolayers. Kinetic Monte Carlo calculations were used to probe the mechanism of charge transport in these helical molecules and revealed the presence of intramolecular through-space charge transfer integral

SUBMITTER: Mendez-Ardoy A 

PROVIDER: S-EPMC5633016 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature