Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex
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https://figshare.com/articles/dataset/Microsecond_Photoluminescence_and_Photoreactivity_of_a_Metal-Centered_Excited_State_in_a_Hexacarbene_Co_III_Complex/13584853
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资源简介:
The
photofunctionality of the cobalt–hexacarbene complex
[Co(III)(PhB(MeIm)3)2]+ (PhB(MeIm)3 = tris(3-methylimidazolin-2-ylidene)(phenyl)borate)
has been investigated by time-resolved optical spectroscopy. The complex
displays a weak (Φ ∼ 10–4) but remarkably
long-lived (τ ∼ 1 μs) orange photoluminescence
at 690 nm in solution at room temperature following excitation with
wavelengths shorter than 350 nm. The strongly red-shifted emission
is assigned from the spectroscopic evidence and quantum chemical calculations
as a rare case of luminescence from a metal-centered state in a 3d6 complex. Singlet oxygen quenching supports the assignment
of the emitting state as a triplet metal-centered state and underlines
its capability of driving excitation energy transfer processes.
创建时间:
2021-01-15



