| Zugriffsnummer | 22969 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | One nanometer thin carbon nanosheets with tunable conductivity and stiffness |
| Autor(in); Institution |
Turchanin, Andrey; Universität Bielefeld, Fakultät für Physik, Bielefeld, GERMANY
Beyer, André; Universität Bielefeld, Fakultät für Physik, Bielefeld, GERMANY
Nottbohm, Christoph T.; Universität Bielefeld, Fakultät für Physik, Bielefeld, GERMANY
Zhang, Xianghui; Universität Bielefeld, Fakultät für Physik, Bielefeld, GERMANY
Stosch, Rainer; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Sologubenko, Alla; RWTH Aachen, Gemeinschaftslabor für Elektronenmikroskopie, Aachen, GERMANY
Mayer, Joachim; RWTH Aachen, Gemeinschaftslabor für Elektronenmikroskopie, Aachen, GERMANY
Hinze, Peter; 2.4, Quantenelektronik, PTB-Braunschweig
Weimann, Thomas; 2.4, Quantenelektronik, PTB-Braunschweig
Gölzhäuser, Armin; Universität Bielefeld, Fakultät für Physik, Bielefeld, GERMANY
|
| Quelle/Jahr | Advanced Materials: 21 (2009), 1233 - 1237 |
| ISSN | 0935-9648 (PRINT) ; 1521-4095 (ONLINE) |
| DOI | |
| Verlag | Weinheim: WILEY-VCH |
| Freie Schlagworte | graphene ; nanomechanics ; membranes ; sensors ; self-assembly |
| Zusammenfassung | Highly oriented pyrolytic graphite (HOPG) is the best ordered artificially made three-dimensional graphitic allotrope. It can be fabricated via pyrolysis of bulk aromatic polymers in the temperature range from 1000 to 3000 K.[15] In analogy to this bulk transformation, we suggest that the pyrolysis of a molecular thin film of aromatic molecules is a promising path for the generation of two-dimensional carbon. Biphenylthiols form densely packed self-assembled monolayers (SAMs) with a thickness of 1 nm on gold surfaces. Such aromatic SAMs could act as suitable precursors in a pyrolytic reaction. However, due to the low thermal stability of thiolates, they desorb from the surface at temperatures that are much lower (350–450 K) than those required for pyrolysis. We have recently found that the temperature-induced desorption of biphenylthiols on gold is inhibited, when biphenyls were crosslinked by electron irradiation in a molecular sheet. In this report, we show that vacuum pyrolysis can transform 1 nm thick aromatic molecular nanosheets from an insulating to a conducting state. The resulting carbon nanosheets are atomically thin, and are mechanically stable as suspended membranes even at temperatures above 1200 K; their resistivity and stiffness are determined by the annealing temperature. |
Zitierung
Turchanin, A., Beyer, A., Nottbohm, C. T., Zhang, X., Stosch, R., Sologubenko, A., Mayer, J., Hinze, P., Weimann, T., & Gölzhäuser, A. (2009). One nanometer thin carbon nanosheets with tunable conductivity and stiffness. Advanced Materials, 21, 1233–1237. https://doi.org/10.1002/adma.200803078