Institute of Solid State Physics
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SS22 WS22 SS23 WS23 SS24 WS24 Guidelines for Master Students
Epitaxially Ordered Metal-Organic-Frameworks based on Copper- Benezenedioic Acid Aligned Metal- Organic Frameworks (MOFs) are interesting for usage in optical, sensor and microelectronic application. Recently it is shown that MOFs can be prepared epitaxially on copper hydroxide (Cu(OH)2). In this work, MOFs, consisting of copper ions, linked in 2 dimensions by 1,4-benzenedioic acid (BDC), as well as 3D-MOFs, consisting of copper, BDC and 1,4-Diazabicyclo[2.2.2]octan (DABCO) are grown on (Cu(OH)2) nanobelts. The nanobelts with dimensions of several µm in length and 20 nm in width are deposited on silicon surfaces by solution processing. It is apparent that the alignment of the Cu(OH)2 nanobelt substrate is an important parameter for the controlled, oriented growth of MOFs. The degree of alignment is studied by X-ray diffraction using pole figure techniques as well as Gracing Incidence X-Ray diffraction (GIXD). The nanobelts are aligned uniaxially with the [100] axis along the silicon surfaces. The MOF follow the orientation of the underlying nanobelts. Interestingly, the formed crystal structures of the MOFs are not known in detail. Further work has to be performed to figure out details of the MOF structure. In a subsequent step a study on the functionalization of grown MOFs by exchanging the ligands is undertaken. |
