title: Hierarchical self-assembly of polycyclic heteroaromatic stars into snowflake patterns.
abstract: Seeing stars: The two-dimensional patterns of the polycyclic heteroaromatic star molecules 1 on graphite vary with the side chain length. For n=12, frustrated self-assembly leads to hierarchically organized superstructures: up to 10 molecules form triangular aggregates which pack densely into hexagonal patterns with very large (15.5 nm) lattice constants.
authors: Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany. stefan.jester@uni-bonn.de
authors: Stefan-S
authors: SS
authors: Jester
authors: Eva
authors: E
authors: Sigmund
authors: Lisa M
authors: LM
authors: Röck
authors: Sigurd
authors: S
authors: Höger
mesh_terms: D000588:Amines / Q000737:chemistry*; D002911:Chrysenes / Q000737:chemistry*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000138:chemical synthesis*; D016252:Microscopy, Scanning Tunneling; D008958:Models, Molecular; D015394:Molecular Structure; D011809:Quinones / Q000737:chemistry*; D011810:Quinoxalines / Q000737:chemistry*
chemical_list: D000588:Amines; D002911:Chrysenes; D006576:Heterocyclic Compounds, 4 or More Rings; D011809:Quinones; D011810:Quinoxalines; C009590:triphenylene