SFB 951/3: Auftragssynthese von konjugierten organischen Molekülen und Übergangsmetalldichalkogenid-Monolagen (TP Z01)

The first mission of this project is to synthesize specific conjugated organic molecules for various projects
within the CRC. Thereby the present expertise in organic synthesis is used to supply research groups in project
areas A and B with the optimal molecules for their experiments lifting the constraint of commercial availability.
Several projects in the CRC will utilize these custom-designed molecules. In the context of the actual experimental
requirements, suitable molecules will be suggested to each project and synthesized in case they are
commercially not available. All compounds, which will be prepared in Z1, have either been reported in the
literature or similar molecules have previously been synthesized. Hence, for their synthesis standard organic
chemistry procedures will be followed and the work will mostly be carried out by a laboratory technician under
the supervision of one of the project leaders (Hecht).

In the next funding period, molecules that will primarily be targeted include: i) various pyrene and rylene derivatives
for A6 (Kirstein/Rabe/Rauschenbeutel), A8 (N. Koch), A14 (Franke), B3 (Blumstengel), B7 (Neher),
B9 (Stähler), B14 (List-Kratochvil), B17 (Ernstorfer/Wolf), and B18 (Kewes/Benson) as well as ii) donor and
acceptor molecules including neutral viologen derivatives as well as fluorinated tetracyanoquinodimethanes,
such as F6-TCNNQ, for A8 (N. Koch), A14 (Franke), and B15 (Bolotin). In specific cases, some selected (nonphotoswitchable) conjugated organic molecules will be equipped with thiol anchoring groups for chemisorption
on transition metal dichalcogenides (TMDCs).

The second mission of this project is to synthesize high-quality TMDC monolayers and to make them available
to numerous projects within the CRC. Monolayers of molybdenum and tungsten disulfides and diselenides will
be grown by chemical vapour deposition (CVD) according to optimized procedures. As requested by individual
projects, monolayers will be transferred to appropriate substrates (dielectrics, metals), and pre-characterized
for substrate coverage and microstructure (optical and scanning probe microscopy).

Projektleitung
Koch, Norbert Prof. Dr. techn. (Details) (Struktur, Dynamik und elektron. Eigenschaften molekul. Systeme)
Hecht, Stefan Prof. (Details) (Organische Chemie und Funktionale Materialien)

Beteiligte Organisationseinheiten der HU

Mittelgeber
DFG: Sonderforschungsbereich

Laufzeit
Projektstart: 07/2019
Projektende: 06/2023

Forschungsbereiche
Physikalische Chemie von Festkörpern und Oberflächen, Materialcharakterisierung

Forschungsfelder
Synthese

Zuletzt aktualisiert 2020-01-06 um 20:08