title: Orientationally ordered C60 on p-sexiphenyl nanostripes on Ag111.
abstract: Long range orientational ordering within C(60) monolayers is observed on p-sexithiophene (6P) monolayer nanostripes on Ag(111) at 77 K. Low-temperature scanning tunneling microscopy studies reveal that the C(60)-6P intermolecular interaction constrains all C(60) molecules to adsorb on their hexagons atop 6P molecules. The orientation-dependent bond-to-bond Coulomb interaction between charge deficient single bonds and double bonds with excess charge in neighboring C(60) molecules results in the in-plane orientational ordering and contributes to the lowering of the total energy of the orientationally ordered C(60) islands.
authors.affiliation: Department of Physics, National University of Singapore, 2 Science Drive 3, 117542, Singapore.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Hongliang
authors.initials: H
authors.lastname: Zhang
authors.forename: Han
authors.initials: H
authors.lastname: Huang
authors.forename: Lan
authors.initials: L
authors.lastname: Chen
authors.forename: Andrew Thye Shen
authors.initials: AT
authors.lastname: Wee
mesh_terms: D016880:Anisotropy; D003460:Crystallization / Q000379:methods*; D037741:Fullerenes / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D037741:Fullerenes; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D012834:Silver; C069837:fullerene C60