Design and application of novel TADF compounds for triplet–triplet upconverting photocatalysis ((2) B08)

• Subject Area: Experimental Condensed Matter Physics ; Inorganic Molecular Chemistry - Synthesis and Characterisation
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 514664767

The energy gain achievable by photocatalysis using visible light is in the range of 160 to 300 kJ mol–1. Targeting of strong bonds using visible light photocatalysis is hence curtailed. This proposal aims at design and synthesis of compounds that allow for an energy-efficient transformation of their excited state energy into redox energy. Based on their small singlet-triplet energy gap and the continual ISC/RISC cycling (intersystem crossing/reverse intersystem crossing), we will use thermally activated delayed fluorescence (TADF) compounds for exploiting their triplet states in both triplet-triplet energy transfer and consecutive triplet-triplet annihilation upconversion processes.

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