title: C(60)-exTTF-C(60) Dumbbells: cooperative effects stemming from two C(60)s on the radical ion pair stabilization.
abstract: [structure: see text] The presence of a second C(60) cage in C(60)-exTTF-C(60) triads [exTTF = 9,10-bis(1,3-dithiol-2-ylidene)-9,10-anthraquinone] has beneficial effects on the stabilization of the radical ion pair formed upon irradiation in comparison with the related C(60)-exTTF dyad. Although C(60)-exTTF-C(60) ensembles show no electronic interaction between the electroactive units in the ground state, their irradiation leads to C(60)(*)(-)-exTTF(*)(+)-C(60) species with lifetimes on the order of 600 ns in benzonitrile; these lifetimes are twice those determined for the analogous C(60)-exTTF dyad.
authors.affiliation: Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, E-28040 Madrid, Spain.
authors.forename: Luis
authors.initials: L
authors.lastname: Sánchez
authors.forename: María
authors.initials: M
authors.lastname: Sierra
authors.forename: Nazario
authors.initials: N
authors.lastname: Martín
authors.forename: Dirk M
authors.initials: DM
authors.lastname: Guldi
authors.forename: Martijn W
authors.initials: MW
authors.lastname: Wienk
authors.forename: René A J
authors.initials: RA
authors.lastname: Janssen