title: Photoinduced electron transfer in supramolecular ruthenium-porphyrin assemblies.
abstract: We present dynamic supramolecular systems composed of a Ru(ii) complex of the form of [Ru(dtBubpy)2(qpy)][PF6]2(where dtBubpy is 4,4'-di-tert-butyl-2,2'-dipyridyl and qpy is 4,4':2',2'':4'',4'''-quaterpyridine) and zinc tetraphenylporphyrins (ZnTPP), through non-covalent interactions between the distal pyridine moieties of the qpy ligand and the zinc of ZnTPP. The optoelectronic properties of the assemblies and the electronic interactions between the chromophoric units have been comprehensively characterized by computational investigations, and steady-state and time-resolved emission spectroscopy. Upon photoexcitation of ZnTPP, electron transfer to the ruthenium center is thermodynamically favorable and, as a result, strong emission quenching of both units occurs.
authors.affiliation: Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, UK. eli.zysman-colman@st-andrews.ac.uk.
authors.forename: Diego
authors.initials: D
authors.lastname: Rota Martir
authors.affiliation: Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, UK. eli.zysman-colman@st-andrews.ac.uk.
authors.forename: Mattia
authors.initials: M
authors.lastname: Averardi
authors.affiliation: CEISAM UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France.
authors.forename: Daniel
authors.identifier: http://orcid.org/0000-0002-1777-8578
authors.initials: D
authors.lastname: Escudero
authors.affiliation: CEISAM UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France and Institut Universitaire de France, 1, rue Descartes, 75005 Paris Cedex 5, France.
authors.forename: Denis
authors.identifier: http://orcid.org/0000-0002-4217-0708
authors.initials: D
authors.lastname: Jacquemin
authors.affiliation: Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, UK. eli.zysman-colman@st-andrews.ac.uk.
authors.forename: Eli
authors.identifier: http://orcid.org/0000-0001-7183-6022
authors.initials: E
authors.lastname: Zysman-Colman