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Single-Molecule Dynamics in a Self-Assembled 2D Molecular Sieve

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journal contribution
posted on 12.07.2006 by Guillaume Schull, Ludovic Douillard, Céline Fiorini-Debuisschert, Fabrice Charra, Fabrice Mathevet, David Kreher, André-Jean Attias
A two-dimensional molecular sieve has been realized. It consists of a host matrix of molecularly engineered building blocks self-assembled at the liquid−solid interface. The simultaneous size- and shape-dependent dynamics of different guest molecules is observed in situ, in real time with submolecular resolution using a scanning tunneling microscope both at the liquid−solid interface and under vacuum. The temperature-dependent dynamics reveals that the diffusion proceeds through thermally activated channeling between single-molecule surface cavities.