Adsorption and assembly of copper phthalocyanine on cross-linked TiO2(110)-(1 x 2) and TiO2(210).
Copper phthalocyanine (CuPc) on reconstructed rutile TiO(2) was studied with ultrahigh vacuum variable temperature scanning tunneling microscopy. On cross-linked TiO(2)(110)-(1 x 2), the CuPc molecules at low coverages sparsely lay flat at the link sites and tilted in troughs between [001] rows. Increase of the CuPc coverage led to the trapping of the CuPc molecules by the rectangular surface cells fenced by the oxygen columns along the [001] direction and the cross-link rows. Each cell could trap one CuPc molecule at intermediate coverages and two CuPc molecules at higher coverages. On TiO(2)(210), the CuPc molecules tilted in defect-free areas and lay at defect sites with their molecular planes parallel to the substrate surface. Further increase of the CuPc coverage induced the formation of one- and two-dimensional assemblies on TiO(2)(210).
Wang
Yongfeng
Y
Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Physical Chemistry, Peking University, Beijing 100871, China.
Ye
Yingchun
Y
Wu
Kai
K
D000327:Adsorption; D003432:Cross-Linking Reagents; D007211:Indoles / Q000737:chemistry*; D008853:Microscopy; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
D003432:Cross-Linking Reagents; D007211:Indoles; D009942:Organometallic Compounds; C009495:titanium dioxide; C015445:copper phthalocyanine; D014025:Titanium