Organic Molecular Building Blocks for the Synthesis of Internal Interfaces
The central aim of this project is the chemical synthesis of organic molecules which are employed for building organic-inorganic internal interfaces of highest quality for further investigation within the CRC. The contact of the organic phase to the inorganic/semiconductor interface is intended via aromatic π-interaction or by covalent bonding (e.g. cycloaddition).
In part A novel fluoro-substituted (aza)pentacene and DNTT derivatives will be synthesized and their packing motif will be characterized by X-ray analysis. Organic-[inorganic/semiconductor] interfaces prepared from the novel (aza)pentacenes and DNTTs will be characterized in collaboration with the physics groups.
In part B, well-ordered multilayers will be generated on Si(001). Based on the chemoselective reactivity of functionalized cyclooctynes on Si(001) as demonstrated in the first funding period, second and third layer attachment will be realized employing azide/alkyne reactions.
- P.E. Hofmann, M.W. Tripp, D. Bischof, Y. Grell, A.L.C. Schiller, T. Breuer, S.I. Ivlev, G. Witte, U. Koert
Unilaterally Fluorinated Acenes: Synthesis and Solid-State Properties
Angew. Chem. Int. Ed. 59, 16501 (2020).
- C. Länger, J. Heep, P. Nikodemiak, T. Bohamud, P. Kirsten, U. Höfer, U. Koert, M. Dürr
Formation of Si/organic interfaces using alkyne-functionalized cyclooctynes – precursormediated adsorption of linear alkynes versus direct adsorption of cyclooctyne on Si(001)
J. Phys.: Condens. Matter 31, 034001 (2019) – Special Issue on Internal Interfaces.
- G. Mette, A. Adamkiewicz, M. Reutzel, U. Koert, M. Dürr, U. Höfer
Controlling an SN2 Reaction by Electronic and Vibrational Excitation: Tip-Induced Ether Cleavage on Si(001)
Angew. Chem. Int. Ed. 58, 3417 (2019).
- J. Meinecke, U. Koert
Copper-Free Click Reaction Sequence: A Chemoselective Layer-by- Layer Approach
Org. Lett. 21, 7609 (2019).