Perchlorination of Coronene Enhances its Propensity for Self-Assembly on Graphene
Conti S, Del Rosso MG, Ciesielski A, Weippert J, Boettcher A, Shin Y, Melinte G, Ersen O, Casiraghi C, Feng X, Muellen K, Kappes MM, Samori P, Cecchini M (2016)
Publication Type: Journal article
Publication year: 2016
Journal
Book Volume: 17
Pages Range: 352-357
Journal Issue: 3
Abstract
Providing a quantitative understanding of the thermodynamics involved in molecular adsorption and self-assembly at a nanostructured carbon material is of fundamental importance and finds outstanding applications in the graphene era. Here, we study the effect of edge perchlorination of coronene, which is a prototypical polyaromatic hydrocarbon, on the binding affinity for the basal planes of graphite. First, by comparing the desorption barrier of hydrogenated versus perchlorinated coronene measured by temperature-programmed desorption, we quantify the enhancement of the strength of physisorption at the single-molecule level though chlorine substitution. Then, by a thermodynamic analysis of the corresponding monolayers based on force-field calculations and statistical mechanics, we show that perchlorination decreases the free energy of self-assembly, not only enthalpically (by enhancing the strength of surface binding), but also entropically (by decreasing the surface concentration). The functional advantage of a chemically modulated 2D self-assembly is demonstrated in the context of the molecule-assisted liquid-phase exfoliation of graphite into graphene.
Involved external institutions
Université de Strasbourg (UDS)
France (FR)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
Karlsruhe Institute of Technology (KIT)
Germany (DE)
University of Manchester
United Kingdom (GB)
Institute of Physics and Chemistry of Materials of Strasbourg (IPCMS) / Institut de physique et de chimie des Matériaux de Strasbourg (IPCMS)
France (FR)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
France (FR)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
Karlsruhe Institute of Technology (KIT)
Germany (DE)
University of Manchester
United Kingdom (GB)
Institute of Physics and Chemistry of Materials of Strasbourg (IPCMS) / Institut de physique et de chimie des Matériaux de Strasbourg (IPCMS)
France (FR)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
How to cite
APA:
Conti, S., Del Rosso, M.G., Ciesielski, A., Weippert, J., Boettcher, A., Shin, Y.,... Cecchini, M. (2016). Perchlorination of Coronene Enhances its Propensity for Self-Assembly on Graphene. ChemPhysChem, 17(3), 352-357. https://doi.org/10.1002/cphc.201501113
MLA:
Conti, Simone, et al. "Perchlorination of Coronene Enhances its Propensity for Self-Assembly on Graphene." ChemPhysChem 17.3 (2016): 352-357.
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