title: Three Redox States of a Diradical Acceptor-Donor-Acceptor Triad: Gating the Magnetic Coupling and the Electron Delocalization.
abstract: The diradical acceptor-donor-acceptor triad 1(••), based on two polychlorotriphenylmethyl (PTM) radicals connected through a tetrathiafulvalene(TTF)-vinylene bridge, has been synthesized. The generation of the mixed-valence radical anion, 1(•-), and triradical cation species, 1(•••+), obtained upon electrochemical reduction and oxidation, respectively, was monitored by optical and ESR spectroscopy. Interestingly, the modification of electron delocalization and magnetic coupling was observed when the charged species were generated and the changes have been rationalized by theoretical calculations.
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de la UAB, 08193 Cerdanyola del Vallès (Barcelona), Spain.
authors.forename: Manuel
authors.initials: M
authors.lastname: Souto
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de la UAB, 08193 Cerdanyola del Vallès (Barcelona), Spain.
authors.forename: Vega
authors.initials: V
authors.lastname: Lloveras
authors.affiliation: Laboratoire de Chimie Quantique, Université de Strasbourg , 4 rue Blaise Pascal, F-67000 Strasbourg, France.
authors.forename: Sergi
authors.initials: S
authors.lastname: Vela
authors.affiliation: Laboratoire de Chimie Quantique, Université de Strasbourg , 4 rue Blaise Pascal, F-67000 Strasbourg, France.
authors.forename: Maria
authors.initials: M
authors.lastname: Fumanal
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de la UAB, 08193 Cerdanyola del Vallès (Barcelona), Spain.
authors.forename: Imma
authors.initials: I
authors.lastname: Ratera
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de la UAB, 08193 Cerdanyola del Vallès (Barcelona), Spain.
authors.forename: Jaume
authors.initials: J
authors.lastname: Veciana