Carbon Nanomembranes (CNMs)
Event details
| Date | 08.12.2014 |
| Hour | 13:15 › 14:15 |
| Speaker | Prof. Armin Gölzhäuser, Physics of Supramolecular Systems, Bielefeld University, Bielefeld, Germany |
| Location | |
| Category | Conferences - Seminars |
A scheme for the fabrication of extremely thin (1 nm !) functional carbon nanomembranes is presented [1, 2]. The first step is the formation of a self-assembled monolayer (SAM). Then the SAM is exposed to electron or UV-irradiation that leads to a dehydrogenation, followed by a cross-linking between neighboring molecules. The cross-linked SAM is then released from the surface, forming a self-supporting carbon nanomembrane (CNM) with properties that are determined by the constituting molecular monolayer. CNMs can be further processed, for example perforated or surfaces functionalized [3]. Pyrolysis transforms CNMs into graphene [4]. It will be shown that CNMs can be engineered with a controlled thickness, conductivity, permeability and elasticity [5]. CNMs are currently tested as ballistic membranes for the separation of molecules. Advanced microscopic (helium ion microscopy) and spectroscopic methods as well as functional tests are applied to investigate the CNMs.
[1] A. Turchanin, A. Gölzhäuser: Carbon Nanomembranes from Self-Assembled Monolayers: Functional surfaces without bulk, Progress in Surface Science, 87, 108 (2012).
[2] P. Angelova, H. Vieker, N. Weber, D. Matei, O. Reimer, I. Meier, S. Kurasch, J. Biskupek, D. Lorbach, K. Wunderlich, L. Chen, A. Terfort, M. Klapper, K. Müllen, U. Kaiser, A. Gölzhäuser, A. Turchanin: A Universal Scheme to Convert Aromatic Molecular Monolayers into Functional Carbon Nanomembranes, ACS Nano 7, 6489 (2013)
[3] Z. Zheng, C. T. Nottbohm, A. Turchanin, H. Muzik, A. Beyer, M. Heilemann, M. Sauer, A. Gölzhäuser: Janus nanomembranes: A generic platform for chemistry in two dimensions, Angew. Chem. Int. Ed. 49, 8493 (2010).
[4] A. Turchanin, D. Weber, M. Büenfeld, C. Kisielowski, M. Fistul, K. Efetov, T. Weimann, R. Stosch, J. Mayer and A. Gölzhäuser: Conversion of Self-Assembled Monolayers into Nanocrystalline Graphene: Structure and Electric Transport, ACS Nano, 5, 3896 (2011); A. Gölzhäuser: Graphene from Molecules, Ang. Chem. Intl. Ed. 51, 10936 (2012).
[5] M. Ai, S. Shishatskiy, J. Wind, X. Zhang, C.T. Nottbohm, N. Mellech, A. Winter, H. Vieker, J. Qui, K.J. Dietz, A. Gölzhäuser, A. Beyer: Carbon Nanomembranes (CNMs) supported by polymer: mechanics and gas permeation, Adv. Mater. 26, 3412 (2014).
Bio: Armin Gölzhäuser studierte Physik in Heidelberg und Tempe/Arizona (USA).
Promotion 1993 in Heidelberg.
1994-1996 als Feodor Lynen Stipendiat an der University of Illinois in Urbana (USA).
1996-2001 wiss. Angestellter, 2001 Habilitation, dann Hochschuldozent an der Universität Heidelberg.
März - September 2003 Professor (Physikalische Chemie) an der Philipps-Universität Marburg.
Seit Oktober 2003 Professor für Experimentalphysik an der Universität Bielefeld.
2004 Mitbegründer des Bielefeld Institute for BioPhysics & NanoScience (BINAS).
Seit 2008 Sprecher des Bielefeld Institute for Biophysics and Nanoscience (BINAS).
[1] A. Turchanin, A. Gölzhäuser: Carbon Nanomembranes from Self-Assembled Monolayers: Functional surfaces without bulk, Progress in Surface Science, 87, 108 (2012).
[2] P. Angelova, H. Vieker, N. Weber, D. Matei, O. Reimer, I. Meier, S. Kurasch, J. Biskupek, D. Lorbach, K. Wunderlich, L. Chen, A. Terfort, M. Klapper, K. Müllen, U. Kaiser, A. Gölzhäuser, A. Turchanin: A Universal Scheme to Convert Aromatic Molecular Monolayers into Functional Carbon Nanomembranes, ACS Nano 7, 6489 (2013)
[3] Z. Zheng, C. T. Nottbohm, A. Turchanin, H. Muzik, A. Beyer, M. Heilemann, M. Sauer, A. Gölzhäuser: Janus nanomembranes: A generic platform for chemistry in two dimensions, Angew. Chem. Int. Ed. 49, 8493 (2010).
[4] A. Turchanin, D. Weber, M. Büenfeld, C. Kisielowski, M. Fistul, K. Efetov, T. Weimann, R. Stosch, J. Mayer and A. Gölzhäuser: Conversion of Self-Assembled Monolayers into Nanocrystalline Graphene: Structure and Electric Transport, ACS Nano, 5, 3896 (2011); A. Gölzhäuser: Graphene from Molecules, Ang. Chem. Intl. Ed. 51, 10936 (2012).
[5] M. Ai, S. Shishatskiy, J. Wind, X. Zhang, C.T. Nottbohm, N. Mellech, A. Winter, H. Vieker, J. Qui, K.J. Dietz, A. Gölzhäuser, A. Beyer: Carbon Nanomembranes (CNMs) supported by polymer: mechanics and gas permeation, Adv. Mater. 26, 3412 (2014).
Bio: Armin Gölzhäuser studierte Physik in Heidelberg und Tempe/Arizona (USA).
Promotion 1993 in Heidelberg.
1994-1996 als Feodor Lynen Stipendiat an der University of Illinois in Urbana (USA).
1996-2001 wiss. Angestellter, 2001 Habilitation, dann Hochschuldozent an der Universität Heidelberg.
März - September 2003 Professor (Physikalische Chemie) an der Philipps-Universität Marburg.
Seit Oktober 2003 Professor für Experimentalphysik an der Universität Bielefeld.
2004 Mitbegründer des Bielefeld Institute for BioPhysics & NanoScience (BINAS).
Seit 2008 Sprecher des Bielefeld Institute for Biophysics and Nanoscience (BINAS).
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Practical information
- General public
- Free
Organizer
- Holger Frauenrath
Contact
- Holger Frauenrath