Multi-resonance thermally activated delayed fluorescence (MR-TADF) materials are promising candidates for organic light-emitting diodes (OLEDs) with narrow electroluminescence (EL) spectra.

Astrogen Co Ltd. has disclosed prodrugs of 5-aminolevulinic acid (5-ALA) derivatives acting as fluorescence imaging agents and photosensitizers in photodynamic therapy with improved storage stability, ...