2024
DOI: 10.1021/jacs.4c00548
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Bifurcation of Excited-State Population Leads to Anti-Kasha Luminescence in a Disulfide-Decorated Organometallic Rhenium Photosensitizer

Julia Franz,
Manuel Oelschlegel,
J. Patrick Zobel
et al.

Abstract: We report a rhenium diimine photosensitizer equipped with a peripheral disulfide unit on one of the bipyridine ligands, [Re(CO) 3 (bpy)( S−S bpy 4,4 )] + (1 + , bpy = 2,2′-bipyridine, S−S bpy 4,4 = [1,2]dithiino[3,4-c:6,5-c′]dipyridine), showing anti-Kasha luminescence. Steady-state and ultrafast time-resolved spectroscopies complemented by nonadiabatic dynamics simulations are used to disclose its excited-state dynamics. The calculations show that after intersystem crossing the complex evolves to two differen… Show more

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