title: Probing the Dipolar Coupling in a Heterospin Endohedral Fullerene-Phthalocyanine Dyad.
abstract: Paramagnetic endohedral fullerenes and phthalocyanine (Pc) complexes are promising building blocks for molecular quantum information processing, for which tunable dipolar coupling is required. We have linked these two spin qubit candidates together and characterized the resulting electron paramagnetic resonance properties, including the spin dipolar coupling between the fullerene spin and the copper spin. Having interpreted the distance-dependent coupling strength quantitatively and further discussed the antiferromagnetic aggregation effect of the CuPc moieties, we demonstrate two ways of tuning the dipolar coupling in such dyad systems: changing the spacer group and adjusting the solution concentration.
authors.affiliation: Department of Materials, University of Oxford , Oxford OX1 3PH, U.K.
authors.forename: Shen
authors.initials: S
authors.lastname: Zhou
authors.affiliation: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Masanori
authors.initials: M
authors.lastname: Yamamoto
authors.affiliation: Department of Materials, University of Oxford , Oxford OX1 3PH, U.K.
authors.forename: G Andrew D
authors.initials: GA
authors.lastname: Briggs
authors.affiliation: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.|Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Imahori
authors.affiliation: Department of Materials, University of Oxford , Oxford OX1 3PH, U.K.
authors.forename: Kyriakos
authors.initials: K
authors.lastname: Porfyrakis
mesh_terms: D003300:Copper / Q000737:chemistry; D004578:Electron Spin Resonance Spectroscopy; D037741:Fullerenes / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D054833:Isoindoles; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D058105:Polymerization; D012428:Ruthenium / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D037741:Fullerenes; D007211:Indoles; D054833:Isoindoles; D009942:Organometallic Compounds; D003300:Copper; D012428:Ruthenium; C013647:phthalocyanine