10 T Solenoid Magnet

• Subject Area: Molecular Chemistry
• Term: Funded in 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 438665545

The spin chemistry of radical pairs plays an important role in photosynthesis or in the magnetic compass of birds but also in many optoelectronic devices such as OLEDs.In order to investigate the spin chemistry of charge-separated states in molecular triads and dyads we perform magnetic field dependent time-resolved optical spectroscopy. Several mechanisms account for the spin evolution which possess a characteristic magnetic field dependence. In recent investigations of several triads and dyads we observed a an unexpected pronounced high-field effect which started at much lower field than the known delta-g effect. In order to clarify the origin of this high-field effect we have to perform measurements at much higher field than the 2 T which is the maximum field we can apply currently. For this reason we apply for a 10 T magnet. Only by a detailed characterization extending over large field regions we can elucidate the spin chemistry in the dyads and triads. This is important for better controlling the electron transfer processes in molecular systems and in optoelectronic devices based on these materials.

• DFG Programme: Major Research Instrumentation
• Major Instrumentation: 10 T Solenoid Magnet
• Instrumentation Group: 0120 Supraleitende Labormagnete
• Applicant Institution: Julius-Maximilians-Universität Würzburg
• Leader: Professor Dr. Christoph Lambert