title: Surface control of alkyl chain conformations and 2D chiral amplification.
abstract: Trioctyl-functionalized triazatriangulenium (trioctyl-TATA) deposited on Au(111) and Ag(111) surfaces by electrospray ionization was investigated using low-temperature scanning tunneling microscopy. The molecule surprisingly adsorbs with gauche rather than anti conformations of the octyl groups. We observed chiral amplification in the islands. Only one of the eight possible configurations of the octyl groups was found in homochiral hexagonal networks. Quantum-chemical calculations confirmed and explained the preference for the gauche conformations of adsorbed trioctyl-TATA.
authors.affiliation: Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany.
authors.forename: Nadine
authors.initials: N
authors.lastname: Hauptmann
authors.forename: Katharina
authors.initials: K
authors.lastname: Scheil
authors.forename: Thiruvancheril G
authors.initials: TG
authors.lastname: Gopakumar
authors.forename: Franziska L
authors.initials: FL
authors.lastname: Otte
authors.forename: Christian
authors.initials: C
authors.lastname: Schütt
authors.forename: Rainer
authors.initials: R
authors.lastname: Herges
authors.forename: Richard
authors.initials: R
authors.lastname: Berndt
mesh_terms: D000327:Adsorption; D000473:Alkanes / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D016252:Microscopy, Scanning Tunneling; D008958:Models, Molecular; D008968:Molecular Conformation; D012834:Silver / Q000737:chemistry; D013499:Surface Properties
chemical_list: D000473:Alkanes; D012834:Silver; D006046:Gold