Molecular thermally activated delayed fluorescence emitters and their spin-dynamics ((2) B06)

• Subject Area: Experimental Condensed Matter Physics ; Mathematics ; Theoretical Chemistry: Electronic Structure, Dynamics, Simulation
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 514664767

Transport and conversion of electronic triplets in organic molecules are of fundamental interest, with applications in spintronics and organic light emitting diodes (OLEDs). In third-generation OLEDs, reverse intersystem crossing (RISC) is exploited, leading to thermally activated delayed fluorescence (TADF) with high external quantum efficiency. Organic molecules exhibiting TADF are model systems for spin-conversion providing a source of hyperpolarization. To explore the exact mechanism, we combine synthesis of tailored donor-acceptor cyanoarenes, magnetic-field dependent confocal microscopy, optical spectroscopy, and theoretical modeling based on quantum chemical calculations.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 386: HYP*MOL – Hyperpolarization in molecular systems
• Applicant Institution: Universität Leipzig
• Project Heads: Professor Dr. Carsten Deibel; Dr. Christian Wiebeler; Professorin Dr. Kirsten Zeitler