| AVS 58th Annual International Symposium and Exhibition | |
| Graphene and Related Materials Focus Topic | Thursday Sessions |
| Session GR+NS+PS+SS-ThM |
| Session: | Graphene: Surface Chemistry, Functionalization, Plasma Processing and Sensor Applications |
| Presenter: | Andrey Turchanin, University of Bielefeld, Germany |
| Authors: | A. Turchanin, University of Bielefeld, Germany C.T. Nottbohm, University of Bielefeld, Germany Z. Zheng, University of Bielefeld, Germany M. Schnietz, University of Bielefeld, Germany A. Beyer, University of Bielefeld, Germany M. Heilemann, Julius-Maximilians-University Würzburg, Germany M. Sauer, Julius-Maximilians-University Würzburg, Germany A. Gölzhäuser, University of Bielefeld, Germany |
| Correspondent: | Click to Email |
Chemical functionalization of graphene is essential for implementations of the 2D carbon sheets in various functional devices (e.g. chemical and biochemical sensors, nanoelectromechanical components, etc.) and for tuning their electrical properties. However, the functionalization is difficult to achieve due to the chemical inertness of graphene sheets with high structural quality. On the other hand, ultrathin (~1 nm) molecular nanosheets made from self-assembled monolayers (SAMs) possess well-defined chemical groups intrinsically. Moreover, due to the directionality of the constituting molecules both faces of the free-standing nanosheets -Janus nanomembranes- can be independently and specifically functionalized. Simple mechanical stacking of the nanosheets allows fabricating ultrathin layered structures with tunable physical and chemical properties. Upon annealing these stacks are converted into graphene sheets with adjusted thickness. The engineering of graphene/nanosheet heterostructures opens up novel routes towards chemically functionalized graphene sheets for functional applications. A potential of this approach will be discussed.
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 (2010) 8493-8497
C.T. Nottbohm, A. Turchanin, A. Beyer, R. Stosch, A. Gölzhäuser, “Mechanically stacked 1 nm thick carbon nanosheets: 2D layered materials with tunable optical, chemical, structural and electrical properties”, Small 7 (2011) 874-883
A. Turchanin, D. Weber, M. Büenfeld, C. Kisielowski, M. Fistul, K. Efetov, R. Stosch, T. Weimann, J. Mayer, A. Gölzhäuser, “Conversion of self-assembled monolayers into nanocrystalline graphene: structure and electric transport”, ACS Nano 5 (2011) DOI: 10.1021/nn200297n