2D assembly of metallacycles on HOPG by shape-persistent macrocycle templates.
The synthesis and scanning tunneling microscopy (STM) investigations of shape-persistent arylene-ethynylene-butadiynylene macrocycles along with their codeposites with metallacycles are reported. 2D ordered arrays of macrocycles and macrocycle/metallacycle architectures (1:1) have been obtained on HOPG by self-assembly under ambient conditions. It is found that the ordered macrocycle array acts as a template for the deposition of the adlayer molecules. For each underlying macrocycle, one metallacycle has been detected. The unit-cell data of both, the macrocycles and their codeposites, show that the structural information of the macrocycle layer is perfectly transformed to the guest molecules. A rather unexpected observation is that the present compound could not be coadsorbed with C(60), indicating that only a minor change in the structure of the macrocycle has a dramatic effect on the ability of the monolayer to bind additional guest molecules.
Chen
Ting
T
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
Pan
Ge-Bo
GB
Wettach
Henning
H
Fritzsche
Martin
M
Höger
Sigurd
S
Wan
Li-Jun
LJ
Yang
Hai-Bo
HB
Northrop
Brian H
BH
Stang
Peter J
PJ