The reaction between 1,3,5-tris(4-hydroxyphenyl)benzene and benzene-1,3,5-tricarbonyl trichloride leads to polyester condensation and formation of a novel COF on an Au(111) surface. The characterization performed in situ by means of variable temperature STM and XPS reveals the formation of an array of hexagonal cavities with ca. 2 nm size.
On-surface synthesis is a promising strategy for engineering heteroatomic covalent nanoarchitectures with prospects in electronics, optoelectronics and photovoltaics. Here we report the thermal tunability of reaction pathways of a molecular precursor in order to select intramolecular versus intermolecular reactions, yielding monomeric or polymeric… (More)
Experimental Procedures: Film growth and STM and XPS investigations were carried out in ultrahigh-10 vacuum (UHV) conditions, with a base pressure of ~2 × 10-10 torr. Atomically flat, crystalline Cu(100) surfaces were prepared by standard sputter/anneal procedures (sputter with 1 kV Ar + ions for 15 min followed by annealing to 800 K for another 15 min),… (More)