A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetime
Abstract Application of photoactive transition metal complexes in lighting, imaging, sensing, and photocatalysis is usually based on the triplet metal-to-ligand charge transfer (3MLCT) excited state of precious metal complexes with 4/5d6 valence electron configurations. These photocatalysts exhibit...
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| Format: | Article |
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Nature Portfolio
2025-08-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-63225-4 |
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| author | Sandra Kronenberger Robert Naumann Christoph Förster Nathan R. East Jan Klett Katja Heinze |
| author_facet | Sandra Kronenberger Robert Naumann Christoph Förster Nathan R. East Jan Klett Katja Heinze |
| author_sort | Sandra Kronenberger |
| collection | DOAJ |
| description | Abstract Application of photoactive transition metal complexes in lighting, imaging, sensing, and photocatalysis is usually based on the triplet metal-to-ligand charge transfer (3MLCT) excited state of precious metal complexes with 4/5d6 valence electron configurations. These photocatalysts exhibit excited state lifetimes exceeding hundreds of nanoseconds. Simple 3d6 transition metal complexes containing abundant metals exhibit lifetimes below 1–2 nanoseconds, and they require multistep ligand syntheses mitigating large-scale implementation. We report that a commercially available bis(imidazolium) pyridine pro-ligand [H2pbmi]2+ and a manganese(II) salt yield the tetracarbene manganese(I) complex [Mn(pbmi)2]+. This complex phosphoresces at room temperature in fluid solution from a 3MLCT state with a lifetime of 190 ns. In combination with the reversible [Mn(pbmi)2]2+/+ process, this translates to an excited state capable of reducing benzophenone. Combination of manganese(I) with rigid carbene/pyridine ligands expands key strategies for photoactive 3d6 metal complexes of earth-abundant metals with 3MLCT lifetimes rivalling those of precious metals and providing a conceptual starting point for a sustainable photochemistry. |
| format | Article |
| id | doaj-art-c8596adc81c041969cb70ae21144c759 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
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| series | Nature Communications |
| spelling | doaj-art-c8596adc81c041969cb70ae21144c7592025-08-24T11:39:35ZengNature PortfolioNature Communications2041-17232025-08-0116111110.1038/s41467-025-63225-4A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetimeSandra Kronenberger0Robert Naumann1Christoph Förster2Nathan R. East3Jan Klett4Katja Heinze5Department of Chemistry, Johannes Gutenberg University MainzDepartment of Chemistry, Johannes Gutenberg University MainzDepartment of Chemistry, Johannes Gutenberg University MainzDepartment of Chemistry, Johannes Gutenberg University MainzDepartment of Chemistry, Johannes Gutenberg University MainzDepartment of Chemistry, Johannes Gutenberg University MainzAbstract Application of photoactive transition metal complexes in lighting, imaging, sensing, and photocatalysis is usually based on the triplet metal-to-ligand charge transfer (3MLCT) excited state of precious metal complexes with 4/5d6 valence electron configurations. These photocatalysts exhibit excited state lifetimes exceeding hundreds of nanoseconds. Simple 3d6 transition metal complexes containing abundant metals exhibit lifetimes below 1–2 nanoseconds, and they require multistep ligand syntheses mitigating large-scale implementation. We report that a commercially available bis(imidazolium) pyridine pro-ligand [H2pbmi]2+ and a manganese(II) salt yield the tetracarbene manganese(I) complex [Mn(pbmi)2]+. This complex phosphoresces at room temperature in fluid solution from a 3MLCT state with a lifetime of 190 ns. In combination with the reversible [Mn(pbmi)2]2+/+ process, this translates to an excited state capable of reducing benzophenone. Combination of manganese(I) with rigid carbene/pyridine ligands expands key strategies for photoactive 3d6 metal complexes of earth-abundant metals with 3MLCT lifetimes rivalling those of precious metals and providing a conceptual starting point for a sustainable photochemistry.https://doi.org/10.1038/s41467-025-63225-4 |
| spellingShingle | Sandra Kronenberger Robert Naumann Christoph Förster Nathan R. East Jan Klett Katja Heinze A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetime Nature Communications |
| title | A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetime |
| title_full | A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetime |
| title_fullStr | A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetime |
| title_full_unstemmed | A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetime |
| title_short | A manganese(I) complex with a 190 ns metal-to-ligand charge transfer lifetime |
| title_sort | manganese i complex with a 190 ns metal to ligand charge transfer lifetime |
| url | https://doi.org/10.1038/s41467-025-63225-4 |
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