Monolayer-to-thin-film transition in supramolecular assemblies: the role of topological protection.

ABSTRACT: The ability to control the transition from a two-dimensional (2D) monolayer to the three-dimensional (3D) molecular structure in the growth of organic layers on surfaces is essential for the production of functional thin films and devices. This has, however, proved to be extremely challenging, starting from the currently limited ability to attain a molecular scale characterization of this transition. Here, through innovative application of low-dose electron diffraction and aberration-corrected transmission electron microscopy (acTEM), combined with scanning tunneling microscopy (STM), we reveal the structural changes occurring as film thickness is increased from monolayer to tens of nanometers for supramolecular assembly of two prototypical benzenecarboxylic acids - terephthalic acid (TPA)

SUBMITTER: Laker ZPL 

PROVIDER: S-EPMC5778949 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature