title: Ferromagnetic Spin Coupling through the 3,4'-Biphenyl Moiety in Arylamine Oligomers-Experimental and Computational Study.
abstract: This report describes the study of a dimer d2+and a linear trimer t3+of amminium radical cations coupled by 3,4'-biphenyl spin coupling units. The synthesis of the parent diamine and triamine and their optical and electrochemical properties obtained by UV-visible and cyclic voltammetry are presented. The chemical doping of the parent diamine d and triamine t was performed quantitatively to obtain samples containing the corresponding dimer d2+and trimer t3+in almost pure high-spin states as evidenced by pulsed EPR nutation spectroscopy. The J coupling constants of the corresponding S = 1 and S = 3/2 spin states were measured (J/k = 135 K) and compared quantitatively to DFT calculations.
authors.affiliation: University Grenoble Alpes , INAC, SCIB, F-38000 Grenoble and CEA, INAC, SCIB, F-38054 Grenoble, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Maurel
authors.affiliation: Faculty of Chemistry, Warsaw University of Technology , Noakowskiego 3, 00-664 Warsaw, Poland.
authors.forename: Lukasz
authors.initials: L
authors.lastname: Skorka
authors.affiliation: University Grenoble Alpes , INAC, SCIB, F-38000 Grenoble and CEA, INAC, SCIB, F-38054 Grenoble, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Onofrio
authors.affiliation: Faculty of Chemistry, Warsaw University of Technology , Noakowskiego 3, 00-664 Warsaw, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Szewczyk
authors.affiliation: University Grenoble Alpes , INAC, SPrAM, F-38000 Grenoble and CEA, INAC, SPrAM, F-38054 Grenoble, France.
authors.forename: David
authors.initials: D
authors.lastname: Djurado
authors.affiliation: University Grenoble Alpes , INAC, SCIB, F-38000 Grenoble and CEA, INAC, SCIB, F-38054 Grenoble, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Dubois
authors.affiliation: University Grenoble Alpes , INAC, SCIB, F-38000 Grenoble and CEA, INAC, SCIB, F-38054 Grenoble, France.
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Mouesca
authors.affiliation: Faculty of Chemistry, Warsaw University of Technology , Noakowskiego 3, 00-664 Warsaw, Poland.
authors.forename: Irena
authors.initials: I
authors.lastname: Kulszewicz-Bajer