title: Control and induction of surface-confined homochiral porous molecular networks.
abstract: Homochirality is essential to many biological systems, and plays a pivotal role in various technological applications. The generation of homochirality and an understanding of its mechanism from the single-molecule to supramolecular level have received much attention. Two-dimensional chirality is a subject of intense interest due to the unique possibilities and consequences of confining molecular self-assembly to surfaces or interfaces. Here, we report the perfect generation of two-dimensional homochirality of porous molecular networks at the liquid-solid interface in two different ways: (i) by self-assembly of homochiral building blocks and (ii) by self-assembly of achiral building blocks in the presence of a chiral modifier via a hierarchical structural recognition process, as revealed by scanning tunnelling microscopy. The present results provide important impetus for the development of two-dimensional crystal engineering and may afford opportunities for the utilization of chiral nanowells in chiral recognition processes, as nanoreactors and as data storage systems.
authors.affiliation: Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Kazukuni
authors.initials: K
authors.lastname: Tahara
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yamaga
authors.forename: Elke
authors.initials: E
authors.lastname: Ghijsens
authors.forename: Koji
authors.initials: K
authors.lastname: Inukai
authors.forename: Jinne
authors.initials: J
authors.lastname: Adisoejoso
authors.forename: Matthew O
authors.initials: MO
authors.lastname: Blunt
authors.forename: Steven
authors.initials: S
authors.lastname: De Feyter
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Tobe
mesh_terms: D000480:Alkynes / Q000737:chemistry; D008958:Models, Molecular; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D011083:Polycyclic Compounds / Q000737:chemistry; D016062:Porosity; D013237:Stereoisomerism; D013499:Surface Properties
chemical_list: D000480:Alkynes; D011083:Polycyclic Compounds; C516931:dehydrobenzo(12)annulene