Nature of Anti‐Dissipative High‐Energy Excited States in Quaterpyridine‐Bridged Ruthenium Complexes
Abstract
Abstract High‐energy excited states with slow rates for internal conversion to the lowest‐energy excited state are prone to be intercepted before they dissipate energy to the medium. In a previous report, oligomeric Ru(II) photosensitizers bearing a bridging 2,2′:5′,3″:6″,2 ‴ –quaterpyridine scaffold showed promising anti‐dissipative behavior in photoinduced electron transfer reactivity. In here, a range of electron accepting and electron donating substituents were incorporated on the ancillary 2,2′‐bipyridine ligands to modulate the excited‐state dynamics. This allowed to unambiguously identify the nature of high‐energy excited states and derive design guidelines for the achievement of anti‐dissipative behavior in oligomeric Ru(II) polypyridines relevant for solar fuels production and photoredox catalysis.
Article Details
Authors (7)
Noémie Chantry
Université catholique de Louvain (UCLouvain) Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry Materials and Catalysis (MOST) Place Louis Pasteur 1, bte L4.01.02 Louvain‐la‐Neuve 1348 Belgium
Agustina Cotic
Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Inorgánica Analítica y Química Física Pabellón 2, Ciudad Universitaria Buenos Aires C1428EHA Argentina
Simon De Kreijger
Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), UCLouvain, Place Louis Pasteur 1/L4.01.02, B-1348 Louvain-la-Neuve, Belgium
Riccardo Di Forti
Physical Chemistry I Friedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU) Egerlandstr. 3 91058 Erlangen Germany
Benjamin Elias
UCLouvain, Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1/L4.01.02, B-1348Louvain-la-Neuve, Belgium
Ludovic Troian‐Gautier
Université catholique de Louvain (UCLouvain) Institut de la Matière Condensée et des Nanosciences (IMCN) Molecular Chemistry Materials and Catalysis (MOST) Place Louis Pasteur 1, bte L4.01.02 Louvain‐la‐Neuve 1348 Belgium
Alejandro Cadranel
Physical Chemistry I and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstr. 3, 91058 Erlangen, Germany