2025/03/05 by Gianna Pölderl, Julian C. G. Kürschner, Fabio Rizzo +1 · 1 voice
Chemistry · Materials Science · #Click Chemistry and Applications #Synthesis and biological activity #Luminescence and Fluorescent Materials
paper · pdf · doi:10.26434/chemrxiv-2025-59f1j
openalex publication_date 2025/03/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/15
Cheap SDS micelles are used to facilitate long-lived room temperature phosphorescence and [2+2] photocycloadditions of chalcone by enabling excited-state aggregate formation. Within the micellar environment chalcone aggregation is promoted leading to stabilization of a planar geometry in the triplet state, resulting in long lived (19 μs) emission λ(max) = 700 nm under blue light irradiation. This long-lived triplet state is exploited in [2+2] cycloadditions with activated alkenes. The micelles effectively isolate the reactive species from molecular oxygen, thereby preventing undesired quenching of triplet states.