Adsorption Geometry Determination of Single Molecules by Atomic Force Microscopy

作者：Schuler Bruno^*; Liu Wei; Tkatchenko Alexandre; Moll Nikolaj; Meyer Gerhard; Mistry Anish; Fox David; Gross Leo

来源：Physical Review Letters, 2013, 111(10): 106103.

DOI：10.1103/PhysRevLett.111.106103

We measured the adsorption geometry of single molecules with intramolecular resolution using noncontact atomic force microscopy with functionalized tips. The lateral adsorption position was determined with atomic resolution, adsorption height differences with a precision of 3 pm, and tilts of the molecular plane within 0.2 degrees. The method was applied to five pi-conjugated molecules, including three molecules from the olympicene family, adsorbed on Cu(111). For the olympicenes, we found that the substitution of a single atom leads to strong variations of the adsorption height, as predicted by state-of-the-art density-functional theory, including van der Waals interactions with collective substrate response effects.

• 出版日期2013-9-5