Publications by authors named "R Berndt"
Indium(iii) phthalocyanine chloride deposited on Pb(100) is studied by scanning tunnelling spectroscopy at cryogenic temperatures. The Cl ions are dissociated and the remaining indium phthalocyanine (InPc) is observed in two states with the metal ion pointing to (↓) or away (↑) from the substrate. Isolated molecules and islands with a superstructure and a unit cell of four inequivalent molecules, namely one InPc↑ and three InPc↓ in different sites, are observed.
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- Researchers are developing a new method for creating single-site catalysts by depositing dome-shaped metal-organic complexes on metallic surfaces, combining characteristics of both homogeneous and heterogeneous catalysis.
- A specific molybdenum(0) tricarbonyl complex, supported by thiacalix[3]pyridine, is synthesized and deposited on gold and silver surfaces through vacuum evaporation.
- The study uses surface spectroscopy and STM to show that the complex remains parallel to the surface and exhibits improved stability and lower reactivity towards oxygen compared to a similar complex with an azacalixpyridine ligand.
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- - This paper discusses the discovery of new alien species of South American rust fungi in Europe, particularly in Switzerland, Germany, and France, marking the first identification of these species outside of South America
- - The identification was based on specific genetic characteristics, including nuclear and mitochondrial DNA sequences, and has mainly been found affecting plants in the Malvaceae family, especially common mallow
- - Notably, it was found that these fungi can exhibit phenotypic plasticity, meaning they can produce different types of spores under varying conditions, including spermogonia and aecidium-type aecia, which suggests complex life-cycle behavior
Submonolayer amounts of chloroaluminum-phthalocyanine on Cu(100) were studied with scanning tunneling spectroscopy. The molecule can be prepared in a fourfold symmetric state whose conductance spectrum exhibits a zero-bias feature similar to a Kondo resonance. In magnetic fields, however, this resonance splits far more than expected from the spin of a single electron.
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- A study was conducted on a Nickel (II) porphyrin complex displaying spin crossover using scanning tunneling microscopy at a very low temperature (0.3 K) on a lead (Pb) substrate.
- The research found that strong interactions between different chemical groups in the complex led to the formation of molecular chains and altered the surface structure of the substrate.
- Tunneling spectroscopy analysis indicated spin-flip excitations in the molecular system, and high magnetic field measurements revealed the orientation of the complex's hard anisotropy axis in relation to the substrate surface.