What question did this study set out to answer?

The aim is to understand the excited states of Cr(III) tris(diimines) and their absorption properties.

April 18, 2026Inorganic Chemistry Frontiers0 citationsOpen Access

Deciphering the Excited-State Landscape of Cr(III) Tris(diimines) Using Cr(phen) 3 3+

ABAlexandra Teresa Barth DFDilara FarkhutdinovaUniversity of Vienna AFAdrienne FaulknerNorth Carolina State University

Key Points

The aim is to understand the excited states of Cr(III) tris(diimines) and their absorption properties.
Analysis of UV-vis-NIR absorption spectra
Investigation of ligand-field excited state manifold
Study of excited-state lifetimes
Identified long-lived doublet ligand-field excited states
Observed broad and structured UV-vis-NIR absorption bands
Demonstrated thermally equilibrated excited state behavior

Abstract

Earth-abundant Cr(III) polypyridines chromophores feature long-lived doublet ligand-field excited states. The thermally equilibrated 2 T 1 / 2 E ligand-field excited state manifold produces broad, structured UV-vis-NIR absorption bands. Although ubiquitous across pseudo-octahedral Cr(III) diimine...

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