N-Heterocyclic Carbenes: Molecular Porters of Surface Mounted Ru-Porphyrins.

Autor: Knecht P; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Meier D; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Reichert J; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Duncan DA; Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0QX, UK., Schwarz M; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Küchle JT; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Lee TL; Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0QX, UK., Deimel PS; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Feulner P; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Allegretti F; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Auwärter W; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Médard G; Chair of Proteomics and Bioanalytics, Technical University of Munich, Emil Erlenmeyer Forum 5, 85354, Freising, Germany., Seitsonen AP; Département de Chimie, École Normale Supérieure, 24 rue Lhomond, 75005, Paris, France.; Université de recherche Paris-Sciences-et-Lettres, Sorbonne Université, Centre National de la Recherche Scientifique, 75005, Paris, France., Barth JV; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany., Papageorgiou AC; Physics Department E20, Technical University of Munich, James Franck Straße 1, 85748, Garching, Germany.; Department of Chemistry, Laboratory of Physical Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 157 71, Athens, Greece.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2022 Dec 05; Vol. 61 (49), pp. e202211877. Date of Electronic Publication: 2022 Nov 02.
DOI: 10.1002/anie.202211877
Abstrakt: Ru-porphyrins act as convenient pedestals for the assembly of N-heterocyclic carbenes (NHCs) on solid surfaces. Upon deposition of a simple NHC ligand on a close packed Ru-porphyrin monolayer, an extraordinary phenomenon can be observed: Ru-porphyrin molecules are transferred from the silver surface to the next molecular layer. We have investigated the structural features and dynamics of this portering process and analysed the associated binding strengths and work function changes. A rearrangement of the molecular layer is induced by the NHC uptake: the NHC selective binding to the Ru causes the ejection of whole porphyrin molecules from the molecular layer on silver to the layer on top. This reorganisation can be reversed by thermally induced desorption of the NHC ligand. We anticipate that the understanding of such mass transport processes will have crucial implications for the functionalisation of surfaces with carbenes.
(© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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