The overlooked NIR luminescence of Cr(ppy)<sub>3</sub>
Laura Stein, Pit Boden, Robert Naumann, Christoph Förster, Gereon Niedner‐Schatteburg, Katja Heinze
Abstract
, emits even in solution at room temperature from a weakly distorted spin-flip state at 910 nm (Hppy = 2-phenylpyridine). The low energy arises from an enhanced covalence of the Cr-C bonds as compared to Cr-N bonds. Lower temperature reduces thermally activated decay increasing the emission intensity.
Topics & Concepts
LuminescenceMaterials sciencePersistent luminescenceNanotechnologyPhotochemistryChemical engineeringChemistryOptoelectronicsThermoluminescenceEngineeringOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsLanthanide and Transition Metal Complexes