Publications by authors named "Ole Bunjes"
Modifications of complexes by attachment of anchor groups are widely used to control molecule-surface interactions. This is of importance for the fabrication of (catalytically active) hybrid systems, viz. of surface immobilized molecular catalysts.
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- The study examines how the complex fac-Re(bpy)(CO)Cl, a catalyst for CO reduction, assembles into 1D, 2D, and 3D structures on an Ag(001) surface using techniques like low-temperature scanning tunneling microscopy.
- Results show that the complex remains stable during sublimation and that depositing it at 300 K causes variations in surface coverage, with many molecules desorbing initially.
- It also finds that specific crystal directions (<110>) are crucial for the binding of these complexes, influencing the arrangement of surface steps and facilitating the formation of monolayers before 3D structures develop.
Nanoconfinement of catalytically active molecules is a powerful strategy to control their chemical activity; however, the atomic-scale mechanisms are challenging to identify. In the present study, the site-specific reactivity of a model rhenium catalyst is studied on the subnanometer scale for complexes confined within quasi-one-dimensional molecular chains on the Ag(001) surface by scanning tunneling microscopy. Injection of tunneling electrons causes ligand dissociation in single molecules.
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