Chiral attachment of styrene mediated by surface dimers on Ge100.
We have investigated the chiral adsorption configurations of styrene on Ge(100) using scanning tunneling microscopy at 300 K. The chemisorbed styrene on a single Ge dimer reduces the symmetry of the molecule, which produces a chiral center, and leads to the (S) or (R) chiral on-top configuration. We have found that the dimeric adsorption of styrene induced by the Ge surface dimer structure forms the enantiomeric and diastereomeric paired end-bridge configurations. We determine the absolute chirality of adsorbed styrene on Ge(100) and demonstrate a novel method for the achiral molecule to produce dimeric enantiomers and diastereomers attached to the semiconductor surface.
Hwang
Yun Jeong
YJ
Department of Chemistry and School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology, Daejon 305-701, Republic of Korea.
Kim
Ansoon
A
Hwang
Eunkyung
E
Kim
Sehun
S
D000327:Adsorption; D019281:Dimerization; D005857:Germanium / Q000737:chemistry*; D017348:Microscopy, Electron, Scanning Transmission / Q000379:methods; D008968:Molecular Conformation; D013237:Stereoisomerism; D020058:Styrene / Q000737:chemistry*; D013499:Surface Properties
D005857:Germanium; D020058:Styrene