A Triad Based on an Iridium(III) Bis-Terpy Complex Leading to a Charge Separated-State with 120 ms Lifetime at Room Temperature (Articolo in rivista)

Type
Label
  • A Triad Based on an Iridium(III) Bis-Terpy Complex Leading to a Charge Separated-State with 120 ms Lifetime at Room Temperature (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • L. Flamigni, E. Baranoff, J.-P. Collin, J.-P. Sauvage, (2006)
    A Triad Based on an Iridium(III) Bis-Terpy Complex Leading to a Charge Separated-State with 120 ms Lifetime at Room Temperature
    in Chemistry (Weinh., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Flamigni, E. Baranoff, J.-P. Collin, J.-P. Sauvage, (literal)
Pagina inizio
  • 6592 (literal)
Pagina fine
  • 6606 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 12 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Instituto ISOF-CNR, Via P. Gobetti 101, 40129 Bologna (Italy) Laboratoire de Chimie Organo-Minerale, UMR 7513 CNRS, UniversitD Louis Pasteur, Institut Le Bel 4, rue Blaise Pascal, 67070 Strasbourg (France) (literal)
Titolo
  • A Triad Based on an Iridium(III) Bis-Terpy Complex Leading to a Charge Separated-State with 120 ms Lifetime at Room Temperature (literal)
Abstract
  • Abstract: A triad D-Ir-A, where Ir is an IrIII bisterpyridine complex connected through an amidophenyl spacer to D, a triphenylamine electron donor, and to A, a naphthalene bisimide electron acceptor, has been synthesized and electrochemically investigated. The photoinduced processes in the triad, which is more than 4-nm long, have been characterized by steady-state and time-resolved optical spectroscopy by comparison with the model dyads D-Ir, Ir-A, and the reference monomers D, Ir, and A. A sequential electron transfer occurs upon excitation of the D and Ir units, leading to the charge-separated state D+-Ir?-A in 100% yield and subsequently to D+-Ir-A? in about 10% yield. The final charge-separated state has a lifetime at room temperature of 120 ms in air-free acetonitrile and of 100 ms in air-equilibrated solvent. Excitation of the A units does not yield intramolecular reactivity, but the resulting triplet-excited state localized on the acceptor, D-Ir-3A, displays intermolecular reactivity. (literal)
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