title: On-surface formation of one-dimensional polyphenylene through Bergman cyclization.
abstract: On-surface fabrication of covalently interlinked conjugated nanostructures has attracted significant attention, mainly because of the high stability and efficient electron transport ability of these structures. Here, from the interplay of scanning tunneling microscopy imaging and density functional theory calculations, we report for the first time on-surface formation of one-dimensional polyphenylene chains through Bergman cyclization followed by radical polymerization on Cu(110). The formed surface nanostructures were further corroborated by the results for the ex situ-synthesized molecular product after Bergman cyclization. These findings are of particular interest and importance for the construction of molecular electronic nanodevices on surfaces.
authors.affiliation: College of Materials Science and Engineering, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Caoan Road 4800, Shanghai 201804, PR China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Sun
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
authors.forename: Zhiwen
authors.initials: Z
authors.lastname: Li
authors.forename: Huihui
authors.initials: H
authors.lastname: Kong
authors.forename: Qinggang
authors.initials: Q
authors.lastname: Tan
authors.forename: Aiguo
authors.initials: A
authors.lastname: Hu
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
mesh_terms: D003300:Copper / Q000737:chemistry; D003500:Cyclization; D016252:Microscopy, Scanning Tunneling; D015394:Molecular Structure; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry*; D011789:Quantum Theory; D013499:Surface Properties
chemical_list: D011108:Polymers; D003300:Copper; C041325:polyphenylene sulfide