Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene-Co(III) Complex
(2021) In Journal of the American Chemical Society p.1307-1312- Abstract
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... (More)
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.
(Less)
- author
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the American Chemical Society
- pages
- 1307 - 1312
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:33449685
- scopus:85099941413
- ISSN
- 0002-7863
- DOI
- 10.1021/jacs.0c12151
- language
- English
- LU publication?
- yes
- id
- c20734f4-051d-4637-bcba-6c3f42559e98
- date added to LUP
- 2021-02-08 10:49:25
- date last changed
- 2024-08-09 12:07:46
@article{c20734f4-051d-4637-bcba-6c3f42559e98, abstract = {{<p>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. </p>}}, author = {{Kaufhold, Simon and Rosemann, Nils W. and Chábera, Pavel and Lindh, Linnea and Bolanõ Losada, Iria and Uhlig, Jens and Pascher, Torbjörn and Strand, Daniel and Wärnmark, Kenneth and Yartsev, Arkady and Persson, Petter}}, issn = {{0002-7863}}, language = {{eng}}, pages = {{1307--1312}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Journal of the American Chemical Society}}, title = {{Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene-Co(III) Complex}}, url = {{http://dx.doi.org/10.1021/jacs.0c12151}}, doi = {{10.1021/jacs.0c12151}}, year = {{2021}}, }