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@ARTICLE{Li:53215,
      author       = {Li, Z. and Pobelov, I. and Han, B. and Wandlowski, Th. and
                      Blaszcyk, A. and Mayor, M.},
      title        = {{C}onductance of redox-active single molecular junctions:
                      an electrochemical approach},
      journal      = {Nanotechnology},
      volume       = {18},
      issn         = {0957-4484},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PreJuSER-53215},
      pages        = {044018},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The conductance of molecular junctions formed of N,
                      N'-bis(n-thioalkyl)4,4'-bipyridinium bromides or
                      alkanedithiols between a gold (Au) scanning tunnelling
                      microscope tip and a Au(111)-(1x1) electrode has been
                      studied at electrified solid/liquid interfaces. A
                      statistical analysis based on large sets of individual
                      current - distance traces was applied to obtain the
                      electrical conductance of single junctions. The one-electron
                      reduction of the viologen moiety from the dication V2+ to
                      the radical cation state V+. gives rise to a $50\%$ increase
                      of the junction conductance. Increasing the length of the
                      alkyl spacer units leads to a tunnelling decay constant
                      ss(CH2) = 5.9-6.1 nm(-1). This value is significantly lower
                      than ss(CH2) = 8.2 nm(-1) estimated for molecular junctions
                      of alkanedithiols. The difference is attributed to
                      conformational changes within the two junctions. The contact
                      conductance was estimated to 10 mu S.},
      keywords     = {J (WoSType)},
      cin          = {CNI / IBN-3 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB381 / I:(DE-Juel1)VDB801 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Nanoscience $\&$ Nanotechnology / Materials Science,
                      Multidisciplinary / Physics, Applied},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000243841000019},
      doi          = {10.1088/0957-4484/18/4/044018},
      url          = {https://juser.fz-juelich.de/record/53215},
}