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Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex

[Image: see text] 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 (...

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Autores principales: Kaufhold, Simon, Rosemann, Nils W., Chábera, Pavel, Lindh, Linnea, Bolaño Losada, Iria, Uhlig, Jens, Pascher, Torbjörn, Strand, Daniel, Wärnmark, Kenneth, Yartsev, Arkady, Persson, Petter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7877722/
https://www.ncbi.nlm.nih.gov/pubmed/33449685
http://dx.doi.org/10.1021/jacs.0c12151
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author Kaufhold, Simon
Rosemann, Nils W.
Chábera, Pavel
Lindh, Linnea
Bolaño Losada, Iria
Uhlig, Jens
Pascher, Torbjörn
Strand, Daniel
Wärnmark, Kenneth
Yartsev, Arkady
Persson, Petter
author_facet Kaufhold, Simon
Rosemann, Nils W.
Chábera, Pavel
Lindh, Linnea
Bolaño Losada, Iria
Uhlig, Jens
Pascher, Torbjörn
Strand, Daniel
Wärnmark, Kenneth
Yartsev, Arkady
Persson, Petter
author_sort Kaufhold, Simon
collection PubMed
description [Image: see text] 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 3d(6) 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.
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spelling pubmed-78777222021-02-12 Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex Kaufhold, Simon Rosemann, Nils W. Chábera, Pavel Lindh, Linnea Bolaño Losada, Iria Uhlig, Jens Pascher, Torbjörn Strand, Daniel Wärnmark, Kenneth Yartsev, Arkady Persson, Petter J Am Chem Soc [Image: see text] 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 3d(6) 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. American Chemical Society 2021-01-15 2021-01-27 /pmc/articles/PMC7877722/ /pubmed/33449685 http://dx.doi.org/10.1021/jacs.0c12151 Text en © 2021 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Kaufhold, Simon
Rosemann, Nils W.
Chábera, Pavel
Lindh, Linnea
Bolaño Losada, Iria
Uhlig, Jens
Pascher, Torbjörn
Strand, Daniel
Wärnmark, Kenneth
Yartsev, Arkady
Persson, Petter
Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex
title Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex
title_full Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex
title_fullStr Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex
title_full_unstemmed Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex
title_short Microsecond Photoluminescence and Photoreactivity of a Metal-Centered Excited State in a Hexacarbene–Co(III) Complex
title_sort microsecond photoluminescence and photoreactivity of a metal-centered excited state in a hexacarbene–co(iii) complex
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7877722/
https://www.ncbi.nlm.nih.gov/pubmed/33449685
http://dx.doi.org/10.1021/jacs.0c12151
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