Single-molecule dynamics in a self-assembled 2D molecular sieve.
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.
Schull
Guillaume
G
Service de Physique et Chimie des Surfaces et Interfaces, Commissariat à l'Energie Atomique, Centre de Saclay, Gif-sur-Yvette, France.
Douillard
Ludovic
L
Fiorini-Debuisschert
Céline
C
Charra
Fabrice
F
Mathevet
Fabrice
F
Kreher
David
D
Attias
André-Jean
AJ
D004058:Diffusion; D008958:Models, Molecular; D015394:Molecular Structure; D036103:Nanotechnology; D011083:Polycyclic Compounds / Q000737:chemistry; D013267:Stilbenes / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
D011083:Polycyclic Compounds; D013267:Stilbenes; C507240:hexa-peri-hexabenzocoronene; C012256:coronene