SKM 2023 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 42: Quantum dots: Growth

HL 42.7: Vortrag

Donnerstag, 30. März 2023, 17:00–17:15, POT 151

Controlled MOF Growth on Functionalized Carbon Nanotubes — •Marvin J. Dzinnik¹, Necmettin E. Akmaz¹, Adrian Hannebauer², Peter Behrens², and Rolf J. Haug¹ — ¹Leibniz Universität Hannover, Institut für Festkörperphysik, Appelstraße 2, 30167 Hannover, Germany — ²Leibniz Universität Hannover, Institut für Anorganische Chemie, Callinstraße 9, 30167 Hannover, Germany

The class of metal organic frameworks (MOFs) is continuously growing. These materials consist of inorganic building blocks, held together by organic linker molecules. Schulze et al. [1] showed that adding functionalized multi-walled carbon nanotubes (MWCNTs) to a UiO-66 synthesis drastically decreased the nucleation time. The MOFs preferably grow on the MWCNT until they fully encapsulate it. We demonstrate a mechanism to spatially control the UiO-66 MOF growth on individual carbon nanotubes and deplete the encapsulation. The MWCNTs are drop-casted on a silicon dioxide surface and then locally modified. The samples are then submerged in the synthesis solution. This process leads to a growth of MOF crystals on the MWCNT surface leaving the modified areas depleted. With this method we are able to define lines free of MOF on the length of a single MWCNT down to several hundred nanometres for example to electrically contact the tubes ends.

[1] Schulze, H. A., et al. Electrically Conducting Nanocomposites of Carbon Nanotubes and Metal-Organic Frameworks with Strong Inter- actions between the two Components. ChemNanoMat, 5(9), (2019), 1159-1169.