The growth and characterisation of a non-planar phthalocyanine / planar phthalocyanine bilayer on an Au (111) surface is investigated using scanning tunnelling microscopy and low energy electron diffraction. The presence of (1x1) epitaxial order is confirmed suggesting significant inter-molecular bonding between layers. This result demonstrates the ability to produce bilayer films with unprecedented structural order which may have huge implications for active layer growth in organic electronic devices.

Ordered growth of vanadyl phthalocyanine (VOPc) on an iron phthlocyanine (FePc) monolayer

L. A. Rochford, A. J. Ramadan, D. P. Woodruff, S. Heutz and T. S. Jones

Phys. Chem. Chem. Phys. Accepted 2015 Link