Spectroscopic Fingerprints of Amine and Imide Functional Groups in Self-Assembled Monolayers

Authors

  • Miguel Ruiz-Osés,

    1. Departamento de Física Aplicada I, Universidad del País Vasco, Plaza de Oñate 2, 20018 Donostia-San Sebastián, Spain
    2. DIPC, Manuel Lardizabal 4, 20018 San Sebastián, Spain
    3. Unidad de Física de Materiales, Centro Mixto CSIC-UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain, Fax: (+34) 943-018289
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  • Thorsten Kampen Dr.,

    1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin, Germany, Fax: (+49) 30-8413-3101
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  • Nora González-Lakunza,

    1. Departamento de Física de Materiales UPV/EHU, Facultad de Química, Apartado 1072, San Sebastián 20080, Spain
    2. DIPC, Manuel Lardizabal 4, 20018 San Sebastián, Spain
    3. Unidad de Física de Materiales, Centro Mixto CSIC-UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain, Fax: (+34) 943-018289
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  • Iñaki Silanes Dr.,

    1. Departamento de Física de Materiales UPV/EHU, Facultad de Química, Apartado 1072, San Sebastián 20080, Spain
    2. DIPC, Manuel Lardizabal 4, 20018 San Sebastián, Spain
    3. Unidad de Física de Materiales, Centro Mixto CSIC-UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain, Fax: (+34) 943-018289
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  • Philipp M. Schmidt-Weber,

    1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin, Germany, Fax: (+49) 30-8413-3101
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  • André Gourdon Dr.,

    1. Groupe NanoSciences, CEMES-CNRS (UPR 8011), BP 94347, 29 Rue J. Marvig, 31055 Toulouse Cedex 4, France, Fax: (+33) 5-62-25-79-99
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  • Andrés Arnau Prof.,

    1. Departamento de Física de Materiales UPV/EHU, Facultad de Química, Apartado 1072, San Sebastián 20080, Spain
    2. DIPC, Manuel Lardizabal 4, 20018 San Sebastián, Spain
    3. Unidad de Física de Materiales, Centro Mixto CSIC-UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain, Fax: (+34) 943-018289
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  • Karsten Horn Prof.,

    1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin, Germany, Fax: (+49) 30-8413-3101
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  • J. Enrique Ortega Prof.

    1. Departamento de Física Aplicada I, Universidad del País Vasco, Plaza de Oñate 2, 20018 Donostia-San Sebastián, Spain
    2. DIPC, Manuel Lardizabal 4, 20018 San Sebastián, Spain
    3. Unidad de Física de Materiales, Centro Mixto CSIC-UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain, Fax: (+34) 943-018289
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Abstract

The electronic structures of naphthalene tetracarboxylic diimide (NTCDI) and 1,4-bis(4,6-diamino-1,3,5-triazin-2-yl)benzene (BDG) monolayer assemblies grown on Au(111) are investigated by photoemission spectroscopy, X-ray absorption, and density functional theory. The different spectroscopic features in the absorption and core-level photoemission spectra are understood in terms of contributions from different core and molecular levels at N- and O-atom sites. This study provides clear spectroscopic fingerprints for amine and imide functional end groups, which drive the self-organization process in a number of planar, π-conjugated molecular structures.

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