Oriented growth of porphyrin-based molecular wires on ionic crystals analysed by nc-AFM

• Thilo Glatzel,
• Lars Zimmerli,
• Shigeki Kawai,
• Ernst Meyer,
• Leslie-Anne Fendt and
• Francois Diederich

Beilstein J. Nanotechnol. 2011, 2, 34–39, doi:10.3762/bjnano.2.4

• molecular assemblies can be formed. The electronic decoupling of the molecules by one or two monolayers of KBr from the Cu(111) substrate is found to be insufficient to enable comparable growth conditions to bulk ionic materials. Keywords: directed growth; KBr; molecular wires; NaCl; nc-AFM; porphyrin

• on the growth direction of the wires. Extending the studies, the self-assemblies of molecules onto thin ionic films deposited on Cu(111) revealed that the growth process is also strongly influenced by the metal substrate even for several monolayer of KBr which also indicates an imperfect electronic

• Figure 2c structural models for KBr(001) and NaCl(001) are presented. To study the influence of a metal substrate on the formation of the molecular wires and assemblies, we evaporated the cyano-porphyrin molecules onto thin KBr films grown on Cu(111). In Figure 3, a series of topographical images can be