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

2018; Royal Society of Chemistry; Volume: 54; Issue: 48 Linguagem: Inglês

10.1039/c8cc03441a

1364-548X

Mirco Natali, Agnese Amati, Nicola Demitri, Elisabetta Iengo,

Photochemistry and Electron Transfer Studies

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.