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Single-Molecule Conductance Studies of Organometallic Complexes Bearing 3-Thienyl Contacting Groups.
Bock, Sören; Al-Owaedi, Oday A; Eaves, Samantha G; Milan, David C; Lemmer, Mario; Skelton, Brian W; Osorio, Henrry M; Nichols, Richard J; Higgins, Simon J; Cea, Pilar; Long, Nicholas J; Albrecht, Tim; Martín, Santiago; Lambert, Colin J; Low, Paul J.
Afiliação
  • Bock S; School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Crawley, 6009, WA, Australia.
  • Al-Owaedi OA; Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK.
  • Eaves SG; Department of Laser Physics, Women Faculty of Science, Babylon University, Iraq.
  • Milan DC; School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Crawley, 6009, WA, Australia.
  • Lemmer M; Department of Chemistry, Durham University, South Rd., Durham, DH1 3LE, UK.
  • Skelton BW; Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK.
  • Osorio HM; Department of Chemistry, Imperial College London, London, SW7 2AZ, UK.
  • Nichols RJ; School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Crawley, 6009, WA, Australia.
  • Higgins SJ; Centre for Microscopy, Characterisation and Analysis, University of Western Australia, Crawley, Western Australia, 6009, Australia.
  • Cea P; Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009, Zaragoza, Spain.
  • Long NJ; Instituto de Nanociencia de Aragón (INA) y Laboratorio de Microscopias, Avanzadas (LMA), Edificio I+D Campus Rio Ebro, Universidad de Zaragoza, C/Mariano Esquillor, s/n, 50018, Zaragoza, Spain.
  • Albrecht T; Departamento de Física, Escuela Politécnica Nacional, Av. Ladrón de Guevara, E11-253, 170525, Quito, Ecuador.
  • Martín S; Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK.
  • Lambert CJ; Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK.
  • Low PJ; Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009, Zaragoza, Spain.
Chemistry ; 23(9): 2133-2143, 2017 Feb 10.
Article em En | MEDLINE | ID: mdl-27897344
The compounds and complexes 1,4-C6 H4 (C≡C-cyclo-3-C4 H3 S)2 (2), trans-[Pt(C≡C-cyclo-3-C4 H3 S)2 (PEt3 )2 ] (3), trans-[Ru(C≡C-cyclo-3-C4 H3 S)2 (dppe)2 ] (4; dppe=1,2-bis(diphenylphosphino)ethane) and trans-[Ru(C≡C-cyclo-3-C4 H3 S)2 {P(OEt)3 }4 ] (5) featuring the 3-thienyl moiety as a surface contacting group for gold electrodes have been prepared, crystallographically characterised in the case of 3-5 and studied in metal|molecule|metal junctions by using both scanning tunnelling microscope break-junction (STM-BJ) and STM-I(s) methods (measuring the tunnelling current (I) as a function of distance (s)). The compounds exhibit similar conductance profiles, with a low conductance feature being more readily identified by STM-I(s) methods, and a higher feature by the STM-BJ method. The lower conductance feature was further characterised by analysis using an unsupervised, automated multi-parameter vector classification (MPVC) of the conductance traces. The combination of similarly structured HOMOs and non-resonant tunnelling mechanism accounts for the remarkably similar conductance values across the chemically distinct members of the family 2-5.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article