Formation of a long-lived radical pair in a Sn(iv) porphyrin-di(l-tyrosinato) conjugate driven by proton-coupled electron-transfer

Mirco Natali; Agnese Amati; Nicola Demitri; Elisabetta Iengo

doi:10.1039/c8cc03441a

Formation of a long-lived radical pair in a Sn(iv) porphyrin-di(l-tyrosinato) conjugate driven by proton-coupled electron-transfer

Chem Commun (Camb). 2018 Jun 12;54(48):6148-6152. doi: 10.1039/c8cc03441a.

Authors

Mirco Natali¹, Agnese Amati, Nicola Demitri, Elisabetta Iengo

Affiliation

¹ Department of Chemical and Pharmaceutical Sciences, University of Ferrara and Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SOLARCHEM), Via L. Borsari 46, 44121 Ferrara, Italy. mirco.natali@unife.it.

PMID: 29808856
DOI: 10.1039/c8cc03441a

Abstract

The novel conjugate 1, featuring two l-tyrosinato residues axially coordinated to the tin centre of a Sn(iv)-tetraphenylporphyrin, is reported as the first example of a supramolecular dyad for photochemical PCET. It is noteworthy that the excitation of 1 in the presence of a suitable base is followed by photoinduced PCET leading to a radical pair state with a surprisingly long lifetime.