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Double layer crystallization of heptahelicene on noble metal surfaces
Author(s) -
Seibel Johannes,
Parschau Manfred,
Ernst KarlHeinz
Publication year - 2020
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.23235
Subject(s) - enantiopure drug , chemistry , crystallization , monolayer , enantiomer , noble metal , transition metal , resolution (logic) , scanning tunneling microscope , chirality (physics) , layer (electronics) , crystallography , metal , stereochemistry , nanotechnology , organic chemistry , enantioselective synthesis , catalysis , materials science , biochemistry , nambu–jona lasinio model , chiral symmetry breaking , physics , quantum mechanics , artificial intelligence , quark , computer science
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.