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dc.contributor.authorJudd, Chris J.
dc.contributor.authorSaywell, Alex
dc.contributor.otherHaddow, Sarah L.
dc.contributor.otherChampness, Neil R.
dc.description.abstractOn-surface reactions based on Ullmann coupling are known to proceed on coinage-metal substrates (e.g. Au, Ag, Cu), with the chemistry of the surface strongly influencing the reaction progression. In addition, the topography of the surface may be expected to affect the local adsorption geometry of the reactants as well as the intermediate and final structures. Here, we investigate the effect of two different surface facets of silver, Ag(111) and Ag(110) on the formation of organometallic and covalent structures for Ullmann-type coupling reactions. Deposition of 4,4”-diiodo-m-terphenyl molecules onto either Ag(111) or Ag(110) surfaces leads to the scission of C-I bonds followed by the formation of organometalic zigzag structures, consisting of molecules connected by coordination bonds to Ag adatoms. The covalently coupled product is formed by annealing each surface, leading to the removal of Ag atoms and the formation of covalently bonded zigzag poly(m-phenylene) structures. Comparisons of the adsorption model of molecules on each surface before and after annealing reveal that on Ag(111), structures rearrange by rotation and elongation of bonds in order to become commensurate with the surface, whereas for the Ag(110) surface, the similarity in adsorption geometry of the intermediate and final states means that no rotation is required.en_UK
dc.publisherThe University of Nottinghamen_UK
dc.subject.lcshSurface chemistryen_UK
dc.subject.lcshSilver -- Surfacesen_UK
dc.subject.lcshScanning probe microscopyen_UK
dc.subject.lcshChemical bonds -- Structureen_UK
dc.titleUllmann coupling reactions on Ag(111) and Ag(110): substrate influence on the formation of covalently coupled products and intermediate metal-organic structuresen_UK
dc.subject.freeon-surface synthesis, Ullmann coupling, scanning probe microscopy, cataylsisen_UK
dc.subject.jacsPhysical sciences::Chemistry::Physical chemistryen_UK
dc.subject.jacsPhysical sciences::Physics::Chemical physics, Solid-state physicsen_UK
dc.subject.lcQ Science::QD Chemistry::QD450 Physical and theoretical chemistryen_UK
uon.divisionUniversity of Nottingham, UK Campus::Faculty of Science::School of Physics and Astronomyen_UK
uon.divisionUniversity of Nottingham, UK Campus::Faculty of Science::School of Chemistryen_UK
uon.funder.controlledEngineering & Physical Sciences Research Councilen_UK
uon.datatypeScanning tunnelling microscopy images (STM)en_UK
uon.funder.freePeople Programme (Marie Curie Actions) of the European Union's Seventh Framework Programmeen_UK
uon.funder.freeRoyal Society Wolfson Merit Awarden_UK
uon.collectionmethodScanning Tunelling Microscopy (STM): Omicron VT STM/AFM systemen_UK

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