Area-selective passivation of sp2 carbon surfaces by supramolecular self-assembly
Z. Li, H. V. Gorp, P. Walke, T. H. Phan, Y. Fujita, J. Greenwood, O. Ivasenko, K. Tahara, Y. Tobe, H. Uji-i, S. F. L. Mertens, S. D. Feyter
Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven-University of Leuven, 3001 Leuven, Belgium
Quynhon University, Department of Physics, 170 An Duong Vuong, Quynhon, Vietnam
School of Physics & Astronomy, University of Nottingham, Nottingham, UK
Department of Applied Chemistry, School of Science and Technology, Meiji University, Tama-ku, Kawasaki, Japan
Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan
Research Institute for Electronic Science, Hokkaido University, 001-0020 Sapporo, Japan
Institut für Angewandte Physik,
TU Wien, 1040 Wien, Austria
Nanoscale 9 (2017) 5188-5193
Altering the chemical reactivity of graphene can offer new opportunities for various applications.
Here, we report that monolayers of densely packed n-pentacontane significantly reduce the covalent grafting of aryl radicals to graphitic surfaces.
The effect is highly local in nature and on fully covered substrates grafting can occur only at monolayer imperfections
such as interdomain borders and vacancy defects.
Grafting partially covered substrates primarily results in the covalent modification of uncoated areas.
Corresponding author: Stijn F. L. Mertens (mertens
).
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