Photoinduced C-C reactions on insulators toward photolithography of graphene nanoarchitectures
Palma CA, Diller K, Berger R, Welle A, Bjork J, Cabellos JL, Mowbray DJ, Papageorgiou AC, Ivleva NP, Matich S, Margapoti E, Niessner R, Menges B, Reichert J, Feng X, Raeder HJ, Klappenberger F, Rubio A, Muellen K, Barth JV (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 136
Pages Range: 4651-4658
Journal Issue: 12
DOI: 10.1021/ja412868w
Abstract
On-surface chemistry for atomically precise sp2 macromolecules requires top-down lithographic methods on insulating surfaces in order to pattern the long-range complex architectures needed by the semiconductor industry. Here, we fabricate sp2-carbon nanometer-thin films on insulators and under ultrahigh vacuum (UHV) conditions from photocoupled brominated precursors. We reveal that covalent coupling is initiated by C-Br bond cleavage through photon energies exceeding 4.4 eV, as monitored by laser desorption ionization (LDI) mass spectrometry (MS) and X-ray photoelectron spectroscopy (XPS). Density functional theory (DFT) gives insight into the mechanisms of C-Br scission and C-C coupling processes. Further, unreacted material can be sublimed and the coupled sp2-carbon precursors can be graphitized by e-beam treatment at 500 °C, demonstrating promising applications in photolithography of graphene nanoarchitectures. Our results present UV-induced reactions on insulators for the formation of all sp 2-carbon architectures, thereby converging top-down lithography and bottom-up on-surface chemistry into technology. © 2014 American Chemical Society.
Involved external institutions
Technische Universität München (TUM)
Germany (DE)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
Karlsruhe Institute of Technology (KIT)
Germany (DE)
Linköpings universitet / Linköping University
Sweden (SE)
University of Basque Country / Universidad del Pais Vasco (UPV) / Euskal Herriko Unibersitatea (EHU)
Spain (ES)
Germany (DE)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
Karlsruhe Institute of Technology (KIT)
Germany (DE)
Linköpings universitet / Linköping University
Sweden (SE)
University of Basque Country / Universidad del Pais Vasco (UPV) / Euskal Herriko Unibersitatea (EHU)
Spain (ES)
How to cite
APA:
Palma, C.-A., Diller, K., Berger, R., Welle, A., Bjork, J., Cabellos, J.L.,... Barth, J.V. (2014). Photoinduced C-C reactions on insulators toward photolithography of graphene nanoarchitectures. Journal of the American Chemical Society, 136(12), 4651-4658. https://doi.org/10.1021/ja412868w
MLA:
Palma, Carlos-Andres, et al. "Photoinduced C-C reactions on insulators toward photolithography of graphene nanoarchitectures." Journal of the American Chemical Society 136.12 (2014): 4651-4658.
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