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Molecular Suction Pads: Self‐Assembled Monolayers of Subphthalocyaninatoboron Complexes on Gold |
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| Authors: | Dr Ulrich Glebe Dr Joe E Baio Prof Líney Árnadóttir Prof Ulrich Siemeling Dr Tobias Weidner |
| Institution: | 1. Institute of Chemistry, University of Kassel, Heinrich‐Plett‐Str. 40, 34132 Kassel (Germany);2. Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich‐Plett‐Str. 40, 34132 Kassel (Germany);3. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz (Germany);4. School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR 97331 (USA) |
| Abstract: | Subphthalocyaninatoboron complexes with six long‐chain alkylthio substituents in their periphery are applicable for the formation of self‐assembled monolayers (SAMs) on gold. Such films are prepared from solution with the axially chlorido‐substituted derivatives and characterised by near‐edge X‐ray absorption fine structure (NEXAFS) spectroscopy, X‐ray photoelectron spectroscopy (XPS) and time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS). The results are in accord with the formation of SAMs assembled by the chemisorption of both covalently bound thiolate‐type as well as coordinatively bound thioether units. The adsorbate molecules adopt an essentially flat adsorption geometry on the substrate, resembling a suction pad on a surface. |
| Keywords: | monolayers nexafs spectroscopy self‐assembly subphthalocyaninatoboron complexes x‐ray photoelectron spectroscopy |