Published December 15, 2021 | Version v1
Journal article Open

Luminescent chromium(0) and manganese(I) complexes

  • 1. University of Basel

Description

In this Frontier article, recently discovered chromium(0) and manganese(I) complexes emitting from metal-to-ligand charge transfer (MLCT) excited states are highlighted. Chelating isocyanide ligands give access to this new class of 3d6 emitters with MLCT lifetimes in (or close to) the nanosecond regime in solution at room temperature. Although the so far achievable luminescence quantum yields in these open-shell complexes are yet comparatively low, the photophysical properties of the new chromium(0) and manganese(I) isocyanides are reminiscent of those of well-known ruthenium(II) polypyridines. Our findings provide insight into how undesired nonradiative MLCT deactivation in 3d6 complexes can be counteracted, and they seem therefore relevant for the further development of new luminescent first-row transition metal complexes based on iron(II) and cobalt(III) in addition to chromium(0) and manganese(I).

Files

Files (646.6 kB)

Name Size Download all
md5:d15763cb613bfa52b729a0f13c3c6159
65.9 kB Download
md5:598b6f6779a69c6dee4ab337feb4cb3d
580.7 kB Download

Additional details

Funding

Photoactive Metal Complexes from Earth-Abundant Elements and Multi-Electron Photochemistry in Donor-Acceptor Compounds 200021_178760
Swiss National Science Foundation