title: Modulation of the molecular spintronic properties of adsorbed copper corroles.
abstract: The ability to modulate the spin states of adsorbed molecules is in high demand for molecular spintronics applications. Here, we demonstrate that the spin state of a corrole complex can be tuned by expanding its fused ring as a result of the modification to the d-π interaction between the metal and ligand. A bicyclo[2.2.2]octadiene-fused copper corrole can readily be converted into a tetrabenzocorrole radical on an Au(111) substrate during the sublimation process. In the scanning tunnelling spectroscopy spectrum, a sharp Kondo resonance appears near the Fermi level on the corrole ligand of the tetrabenzocorrole molecule. In contrast, a non-fused-ring-expanded copper corrole molecule, copper 5,10,15-triphenylcorrole, shows no such Kondo feature. Mapping of the Kondo resonance demonstrates that the spin distribution of the tetrabenzocorrole molecule can be further modified by the rotation of the meso-aryl groups, in a manner that could lead to applications in molecular spintronics.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Wu
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-0877, Japan.
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-0877, Japan.
authors.forename: Puneet
authors.initials: P
authors.lastname: Mishra
authors.affiliation: 1] Institute of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-0877, Japan [2] JST, CREST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Tadahiro
authors.identifier: 0000000323428184
authors.initials: T
authors.lastname: Komeda
authors.affiliation: Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa.
authors.forename: John
authors.identifier: 0000000213459262
authors.initials: J
authors.lastname: Mack
authors.affiliation: State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Chang
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, Aobayama, Sendai 980-8578, Japan.
authors.forename: Nagao
authors.initials: N
authors.lastname: Kobayashi
authors.affiliation: State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Shen