2019
DOI: 10.1021/acs.jpclett.9b01292
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One-Dimensional Double Wires and Two-Dimensional Mobile Grids: Cobalt/Bipyridine Coordination Networks at the Solid/Liquid Interface

Abstract: Various architectures have been generated and observed by STM at a solid/liquid interface resulting from an in situ chemical reaction between the bipyridine terminal groups of a ditopic ligand and Co(II) ions. Large monodomains of one-dimensional (1D) double wires are formed by Co(II)/ligand coordination, with polymer lengths as long as 150 nm. The polymers are organized as parallel wires 8 nm apart, and the voids between wires are occupied by solvent molecules. Two-dimensional (2D) grids, showing high surface… Show more

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Cited by 18 publications
(20 citation statements)
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“…The bpy-DAE-bpy molecules are observed in the trans-bpy conformation with the ditopic bipyridine groups oriented in opposite directions. The "S" shaped appearance of bpy-DAE-bpy molecules is in line with our previous studies of bpy-X-bpy derivatives (X= azobenzene, biEDOT or Fluorene)[38,[66][67][68]. Since the molecules were irradiated in solution with UV, the surface is seen to be overwhelmingly covered by CF isomers under STM (Figure1b).…”
supporting
confidence: 89%
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“…The bpy-DAE-bpy molecules are observed in the trans-bpy conformation with the ditopic bipyridine groups oriented in opposite directions. The "S" shaped appearance of bpy-DAE-bpy molecules is in line with our previous studies of bpy-X-bpy derivatives (X= azobenzene, biEDOT or Fluorene)[38,[66][67][68]. Since the molecules were irradiated in solution with UV, the surface is seen to be overwhelmingly covered by CF isomers under STM (Figure1b).…”
supporting
confidence: 89%
“…The bpy-DAE-bpy ligand is depicted in Scheme 1. A series of ditopic ligands (bpy-X-bpy) with variable central bridges has been reported previously by the authors' group [38,[66][67][68]. The bpy-X-bpy building blocks can adopt either the cis-bpy or the trans-bpy configurations, depending on the protonation of the bipyridine units.…”
Section: Resultsmentioning
confidence: 98%
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“…Metal coordination that forms supramolecular complexes in 2D molecular assemblies, including oligomers and polymers, has been studied. 3 Two-dimensional structural changes associated with the addition of metal ions can be used to judge whether or not a metal complex has been formed. While the apparent formation of metal-coordinated oligomers/polymers has been confirmed by STM, to our knowledge, only a few studies have focused on the effect of the metal-coordination process, that is, in situ or ex situ , on 2D molecular network formation.…”
mentioning
confidence: 99%
“…4-Aminophenyl-2,2′:6′,2″-terpyridine, 5-aminophenyl-2,2′-bipyridine, and their corresponding Co and Ru complexes were synthesized following previously reported procedures. ,, Co­(tpy) 2 and Ru­(tpy) 2 have the same length (2 nm) but differ in the metal centers. The two amino terminal groups act either as electrochemical active groups for grafting onto the bottom electrode or as anchoring groups to be picked up by the Au STM tips.…”
mentioning
confidence: 99%