Site-specific physisorption and chemical reaction of subphthalocyanine molecules on silicon(111)-(7×7)

A Novel Route To Molecular Self-Assembly: Self-Intermixed Monolayer Phases

“…[10,11] Nevertheless, both molecules bind rather strongly to Ag(111): the C 60 monolayer desorbs only above 400 8C, [13] whereas we found that the SubPc molecules decompose above 200 8C. At room temperature, however, isolated molecules of both types diffuse and cannot be imaged by STM.…”

“…[10,16] Both approaches indicate an excess of electronic charge on the electronegative atoms which surround the electron-deficient boron. This charge is compensated by an electron deficit which is mainly localized on the six central carbon atoms (Figure 4).…”

“…[8] On the other hand, SubPc is less polarizable than C 60 , owing to its less-extended frontier p-orbital, which is mainly localized around the central C-N-C ring. [10] Therefore, the van der Waals attraction between adsorbed SubPc molecules is weaker. This picture is supported by the tendency of SubPc to form ordered structures with voids and with intermolecular separations [8] of 1.79 nm which exceed the lateral extent of the molecule.…”

Surface chemistry of porphyrins and phthalocyanines

“…In the context of surface science, mainly the subphthalocyanine derivative chloro(subphthalocyanino)boron(III) (Fig. 10b) has found attention [175][176][177][178][179][180][181], along with a subphthalocyanine dimer [182].…”

Intermediate structures in two-dimensional molecular self-assembly

“…SubPc is still the only known threefold symmetric phthalocyanine. SubPc adsorption and growth has been studied previously [38][39][40][41][42], whereby on Ag(111) SubPc was found to adsorb with the bowl opening pointing away from the surface. On Au(111) Jiang et al recently reported an intermediate phase that, similar to the [7 ] H/Cu(111) case, shows the coexistence of differently azimuthal-aligned structures.…”