Solubilized derivatives of perylenetetracarboxylic dianhydride (PTCDA) adsorbed on highly oriented pyrolytic graphite.
The effect on 2D molecular crystallization caused by the addition of propylthioether side groups to the 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) molecule is investigated using scanning tunneling microscopy (STM). The molecule was deposited from 1-phenyloctane onto highly oriented pyrolytic graphite (HOPG) and imaged at the liquid-solid interface. We observe a different structure to previously reported arrangements of PTCDA due to the presence of the propylthioether side groups which inhibits the formation of the herringbone phase. A model, supported by calculations based on density functional theory, is proposed in which molecules form rows stabilized by hydrogen bonding.
Russell
James C
JC
School of Physics and Astronomy, University of Nottingham, University Park, Nottingham, U.K..
Blunt
Matthew O
MO
Goretzki
Gudrun
G
Phillips
Anna G
AG
Champness
Neil R
NR
Beton
Peter H
PH