Double layer crystallization of heptahelicene on noble metal surfaces

0561264 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
Seibel, J. - Parschau, M. - Ernst, Karl-Heinz
Double layer crystallization of heptahelicene on noble metal surfaces.
Chirality. Roč. 32, č. 7 (2020), s. 975-980. ISSN 0899-0042. E-ISSN 1520-636X
Institucionální podpora: RVO:68378271
Klíčová slova: chiral crystallization * heptahelicene * scanning tunneling microscopy * surface science
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.437, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1002/chir.23235

Resolution of enantiomers of chiral compounds via crystallization is the dominant method in chemical industry, but chiral recognition at the molecular level during this process is still poorly understood. Using single metal surfaces in ultrahigh vacuum as model system, the enantio-related transition from the monolayer structure into a double layer of the racemic mixture of heptahelicene has been studied with scanning tunneling microscopy. Submolecular resolution reveals enantiopure second layers on Ag(111) and almost enantiopure second layers on Au(111). In analogy to previous results on Cu(111), it is concluded that transition from the 2D first layer racemate into a layered racemate occurs.
Trvalý link: https://hdl.handle.net/11104/0333956