Skip to main content
Open Access Publications from the University of California

Defect-tolerant aligned dipoles within two-dimensional plastic lattices

  • Author(s): Thomas, JC
  • Schwartz, JJ
  • Hohman, JN
  • Claridge, SA
  • Auluck, HS
  • Serino, AC
  • Spokoyny, AM
  • Tran, G
  • Kelly, KF
  • Mirkin, CA
  • Gilles, J
  • Osher, SJ
  • Weiss, PS
  • et al.

© 2015 American Chemical Society. Carboranethiol molecules self-assemble into upright molecular monolayers on Au{111} with aligned dipoles in two dimensions. The positions and offsets of each molecule's geometric apex and local dipole moment are measured and correlated with sub-Ångström precision. Juxtaposing simultaneously acquired images, we observe monodirectional offsets between the molecular apexes and dipole extrema. We determine dipole orientations using efficient new image analysis techniques and find aligned dipoles to be highly defect tolerant, crossing molecular domain boundaries and substrate step edges. The alignment observed, consistent with Monte Carlo simulations, forms through favorable intermolecular dipole-dipole interactions.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View