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Conformational control of chemical reactivity for surface‐confined Ru‐porphyrins

DOI: 10.1002/anie.202104075 DOI Help

Authors: Peter Knecht (Technische Universitat Munchen) , Joachim Reichert (Technische Universitat Munchen) , Peter S. Deimel (Technische Universitat Munchen) , Peter Feulner (Technische Universitat Munchen) , Felix Haag (Technische Universitat Munchen) , Francesco Allegretti (Technische Universitat Munchen) , Manuela Garnica (Technische Universitat Munchen) , Martin Schwarz (Technische Universitat Munchen) , Willi Auwärter (Technische Universitat Munchen) , Paul T. P. Ryan (Diamond Light Source) , Tien-Lin Lee (Diamond Light Source) , David A. Duncan (Diamond Light Source) , Ari Paavo Seitsonen (Ecole Normale Superieure) , Johannes V. Barth (Technische Universitat Munchen) , Anthoula Chrysa Papageorgiou (Technische Universitat Munchen)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Angewandte Chemie International Edition

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

Open Access Open Access

Abstract: We assess the crucial role of tetrapyrrole flexibility in the CO ligation to distinct Ru‐porphyrins supported on an atomistically well‐defined Ag(111) substrate. Our systematic real space visualisation and manipulation experiments with scanning tunnelling microscopy directly probe the ligation, while bond‐resolving atomic force microscopy and X‐ray standing waves measurements characterise the geometry, X‐ray and ultraviolet photoelectron spectroscopy the electronic structure, and temperature programmed desorption the binding strength. Density functional theory calculations provide additional insight into the functional interface. We unambiguously demonstrate that the substituents regulate the interfacial conformational adaptability, either promoting or obstructing the uptake of axial CO adducts.

Journal Keywords: metalloporphyins; CO ligand; Scanning probe microscopy; X-ray spectroscopy; Ab initio calculation

Subject Areas: Chemistry, Physics

Instruments: I09-Surface and Interface Structural Analysis

Added On: 05/05/2021 13:35


Discipline Tags:

Surfaces Physics Molecular Complexes Physical Chemistry Chemistry Organic Chemistry

Technical Tags:

Diffraction X-ray Standing Wave (XSW)