title: Substrate-Mediated C-C and C-H Coupling after Dehalogenation.
abstract: Intermolecular C-C coupling after cleavage of C-X (mostly, X = Br or I) bonds has been extensively studied for facilitating the synthesis of polymeric nanostructures. However, the accidental appearance of C-H coupling at the terminal carbon atoms would limit the successive extension of covalent polymers. To our knowledge, the selective C-H coupling after dehalogenation has not so far been reported, which may illuminate another interesting field of chemical synthesis on surfaces besides in situ fabrication of polymers, i.e., synthesis of novel organic molecules. By combining STM imaging, XPS analysis, and DFT calculations, we have achieved predominant C-C coupling on Au(111) and more interestingly selective C-H coupling on Ag(111), which in turn leads to selective synthesis of polymeric chains or new organic molecules.
authors.forename: Huihui
authors.identifier: 0000-0001-5652-5269
authors.initials: H
authors.lastname: Kong
authors.forename: Sha
authors.initials: S
authors.lastname: Yang
authors.affiliation: Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany.|Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster , Heisenbergstrasse 11, 48149 Münster, Germany.
authors.forename: Hongying
authors.initials: H
authors.lastname: Gao
authors.affiliation: Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany.|Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster , Heisenbergstrasse 11, 48149 Münster, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Timmer
authors.affiliation: Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Hill
authors.affiliation: Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany.|Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster , Heisenbergstrasse 11, 48149 Münster, Germany.
authors.forename: Oscar
authors.initials: O
authors.lastname: Díaz Arado
authors.affiliation: Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany.|Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster , Heisenbergstrasse 11, 48149 Münster, Germany.
authors.forename: Harry
authors.initials: H
authors.lastname: Mönig
authors.forename: Xinyan
authors.initials: X
authors.lastname: Huang
authors.forename: Qin
authors.initials: Q
authors.lastname: Tang
authors.forename: Qingmin
authors.identifier: 0000-0001-7810-3438
authors.initials: Q
authors.lastname: Ji
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany.|Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster , Heisenbergstrasse 11, 48149 Münster, Germany.
authors.forename: Harald
authors.initials: H
authors.lastname: Fuchs