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@ARTICLE{Han:58664,
      author       = {Han, B. and Li, Z. and Wandlowski, Th.},
      title        = {{A}dsorption and {S}elf-assembly of {A}romatic {C}arboxylic
                      {A}cids on {A}u/electrolyte {I}nterfaces},
      journal      = {Analytical and bioanalytical chemistry},
      volume       = {388},
      issn         = {1618-2642},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-58664},
      pages        = {121 - 129},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The adsorption and self-assembly of benzoic acid (BA),
                      isophthalic acid (IA), and trimesic acid (TMA) on Au(111)
                      single crystals and on Au(111-25 nm) quasi-single
                      crystalline film electrodes have been investigated in 0.1 M
                      HClO4 by combining in situ surface-enhanced infrared
                      reflection absorption spectroscopy (SEIRAS) and scanning
                      tunneling microscopy (STM) with cyclic voltammetry. All
                      three acids are physisorbed on the electrode surface in a
                      planar orientation at negative charge densities. Excursion
                      to positive charge densities (or more positive potentials)
                      causes an orientation change from planar to perpendicular.
                      Chemisorbed structures are formed through the coordination
                      of a deprotonated carboxyl group to the positively charged
                      electrode surface. The three acid molecules assemble in
                      different ordered patterns, which are controlled by
                      pi-stacking (BA) or intermolecular hydrogen bonds between
                      COOH groups (IA, TMA). A detailed analysis of the potential
                      and time dependencies of the nu(C=O), nus(OCO), and nu(C-OH)
                      vibration modes shows that the strength of lateral
                      interactions increases upon chemisorption with an increasing
                      number of COOH groups in the sequence of BA<IA<TMA. The
                      vibration bands shift to higher wavenumbers due to
                      dipole-dipole coupling, Stark tuning, and electron back
                      donation from the electrode to COO-. In addition, an
                      "indirect" electron donation to the COOH groups takes place
                      via the conjugated molecular skeleton superimposed on the
                      intermolecular hydrogen bonding.},
      keywords     = {Adsorption / Benzoic Acid: chemistry / Electrochemistry /
                      Electrolytes: chemistry / Gold: chemistry / Models,
                      Molecular / Phthalic Acids: chemistry / Surface Properties /
                      Tricarboxylic Acids: chemistry / Electrolytes (NLM
                      Chemicals) / Phthalic Acids (NLM Chemicals) / Tricarboxylic
                      Acids (NLM Chemicals) / isophthalate (NLM Chemicals) /
                      trimesic acid (NLM Chemicals) / Benzoic Acid (NLM Chemicals)
                      / Gold (NLM Chemicals) / J (WoSType)},
      cin          = {IBN-3 / CNI / JARA-FIT},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB801 / I:(DE-Juel1)VDB381 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Biochemical Research Methods / Chemistry, Analytical},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17318516},
      UT           = {WOS:000245292200015},
      doi          = {10.1007/s00216-007-1166-6},
      url          = {https://juser.fz-juelich.de/record/58664},
}