title: Ideal redox behavior of the high-density self-assembled monolayer of a molecular tripod on a Au(111) surface with a terminal ferrocene group.
abstract: A dyad consisting of a tripod-shaped trithiol with an adamantane core and a terminal ferrocenyl group linked through ap-phenyleneethynylene bridge was synthesized. The trithiol formed a stable self-assembled monolayer (SAM) on Au(111), wherein each molecule is bound to the surface by three-point adsorption using all sulfur atoms, with confirmation by PM-IRRAS and XPS analyses. Cyclic voltammetry of the SAM showed a line shape typical of an ideal adsorbed system, that is, a monolayer with negligible electrostatic interaction among the terminal ferrocenyl groups. Thus, a rare SAM was achieved, in which the component molecules were isolated from adjacent molecules without the coadsorption of nonelectroactive molecules.
authors.affiliation: Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie, Japan. kitagawa@chem.mie-u.ac.jp
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Kitagawa
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Matsubara
authors.forename: Koichi
authors.initials: K
authors.lastname: Komatsu
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Hirai
authors.forename: Takao
authors.initials: T
authors.lastname: Okazaki
authors.forename: Takahiro
authors.initials: T
authors.lastname: Hase
mesh_terms: D000218:Adamantane / Q000737:chemistry; D000480:Alkynes / Q000737:chemistry; D004987:Ethers / Q000737:chemistry; D005296:Ferrous Compounds / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D000075163:Metallocenes; D008958:Models, Molecular; D015394:Molecular Structure; D010084:Oxidation-Reduction; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D000480:Alkynes; D004987:Ethers; D005296:Ferrous Compounds; D000075163:Metallocenes; D013438:Sulfhydryl Compounds; C436384:phenyleneethynylene; D006046:Gold; D000218:Adamantane; C004998:ferrocene