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Assembly and manipulation of a prototypical N-heterocyclic carbene with a metalloporphyrin pedestal on a solid surface

DOI: 10.1021/jacs.1c01229 DOI Help

Authors: Peter Knecht (Technical University Munich) , Bodong Zhang (Technical University of Munich) , Joachim Reichert (Technical University of Munich) , David A. Duncan (Diamond Light Source) , Martin Schwarz (echnical University of Munich) , Felix Haag (Technical University Munich) , Paul Ryan (Diamond Light Source; Imperial College London) , Tien-Lin Lee (Diamond Light Source) , Peter S. Deimel (Technical University of Munich) , Peter Feulner (Technical University of Munich) , Francesco Allegretti (Technical University of Munich) , Willi Auwärter (Technical University of Munich) , Guillaume Médard (echnical University of Munich) , Ari Paavo Seitsonen (Université de Recherche Paris-Sciences-et-Lettres, Sorbonne Université, Centre National de la Recherche Scientifique) , Johannes V. Barth (Technical University of Munich) , Anthoula C. Papageorgiou (echnical University of Munich)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of The American Chemical Society

State: Published (Approved)
Published: March 2021
Diamond Proposal Number(s): 24320

Abstract: The controlled arrangement of N-heterocyclic carbenes (NHCs) on solid surfaces is a current challenge of surface functionalization. We introduce a strategy of using Ru porphyrins in order to control both the orientation and lateral arrangement of NHCs on a planar surface. The coupling of the NHC to the Ru porphyrin is a facile process which takes place on the interface: we apply NHCs as functional, robust pillars on well-defined, preassembled Ru porphyrin monolayers on silver and characterize these interfaces with atomic precision via a battery of experimental techniques and theoretical considerations. The NHCs assemble at room temperature modularly and reversibly on the Ru porphyrin arrays. We demonstrate a selective and complete functionalization of the Ru centers. With its binding, the NHC modifies the interaction of the Ru porphyrin with the Ag surface, displacing the Ru atom by 1 Å away from the surface. This arrangement of NHCs allows us to address individual ligands by controlled manipulation with the tip of a scanning tunneling microscope, creating patterned structures on the nanometer scale.

Subject Areas: Chemistry, Materials


Instruments: I09-Surface and Interface Structural Analysis

Discipline Tags:

Organic Chemistry Physics Surfaces interfaces and thin films Chemistry

Technical Tags:

Diffraction X-ray Standing Wave (XSW)