2025/02/28 by Joël Wellauer, Björn Pfund, Isabelle Becker +3 · 1 voice · 2 citations
Chemistry · Materials Science · #Lanthanide and Transition Metal Complexes #Magnetism in coordination complexes #Radical Photochemical Reactions
paper · pdf · doi:10.1021/jacs.4c18603
openalex publication_date 2025/02/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Iron is the most abundant transition metal element and would be the ideal replacement for noble metals in many applications that rely on luminescent and long-lived electronically excited states. We show that efficient reversible energy transfer between doublet excited states of iron complexes and triplet excited states on organic ligands improves energy storage by up to 350-fold. As a result, luminescence lifetimes of up to 100 ns are achieved, the upconversion from red to blue light becomes 68 times more efficient and the yield of benchmark photoredox reactions is significantly improved. These advances make iron coordination compounds more promising candidates for applications in lighting, solar energy conversion and photocatalysis.