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  Photoinduced C–C Reactions on Insulators toward Photolithography of Graphene Nanoarchitectures

Palma, C.-A., Diller, K., Berger, R., Welle, A., Björk, J., Cabellos, J. L., et al. (2014). Photoinduced C–C Reactions on Insulators toward Photolithography of Graphene Nanoarchitectures. Journal of the American Chemical Society, 136(12), 4651-4658. doi:10.1021/ja412868w.

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 Creators:
Palma, Carlos-Andres1, Author
Diller, Katharina1, Author
Berger, Reinhard2, Author
Welle, Alexander3, Author
Björk, Jonas4, Author
Cabellos, Jose Luis5, Author
Mowbray, Duncan J.5, Author
Papageorgiou, Anthoula C.1, Author
Ivleva, Natalia P.6, Author
Matich, Sonja7, Author
Margapoti, Emanuela7, Author
Niessner, Reinhard6, Author
Menges, Bernhard2, Author
Reichert, Joachim1, Author
Feng, Xinliang2, Author
Räder, Hans Joachim2, Author
Klappenberger, Florian1, Author
Rubio, Angel5, 8, Author           
Müllen, Klaus2, Author
Barth, Johannes V.1, Author
Affiliations:
1Physik-Department, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany, ou_persistent22              
2MPI for Polymer Research, Max Planck Society, ou_1309545              
3Institut für Funktionelle Grenzflächen, Karlsruher Institut für Technologie,, Hermann-von-Helmholz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany,, ou_persistent22              
4Department of Physics, Chemistry and Biology, IFM, Linköping University, 58183 Linköping , Sweden, ou_persistent22              
5Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento de Física de Materiales, Centro de Física de Materiales CSIC-UPV/EHU-MPC DIPC, Universidad del País Vasco UPV/EHU, Av. Tolosa 72, E-20018 San Sebastián, Spain, ou_persistent22              
6Chair for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistr. 17, 81377 München, Germany, ou_persistent22              
7Walter Schottky Institut and Physik-Department, Technische Universität München, Am Coulombwall 4a, 85748 Garching, Germany, ou_persistent22              
8Theory, Fritz Haber Institute, Max Planck Society, ou_634547              

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 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 sp2-carbon architectures, thereby converging top-down lithography and bottom-up on-surface chemistry into technology.

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Language(s): eng - English
 Dates: 2013-12-182014-02-132014-02-132014-03-26
 Publication Status: Issued
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/ja412868w
 Degree: -

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Project name : DYNAMO - Dynamical processes in open quantum systems: pushing the frontiers of theoretical spectroscopy
Grant ID : 267374
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Publ. Info: American Chemical Society
Pages: - Volume / Issue: 136 (12) Sequence Number: - Start / End Page: 4651 - 4658 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870