ArticleAngewandte Chemie (International ed. in English)2025
Efficient Red Light-Driven Singlet Oxygen Photocatalysis with an Osmium-Based Coulombic Dyad.
Article in Angewandte Chemie (International ed. in English), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Controllable and Exceptionally Efficient Spin-Orbit Charge-Transfer Intersystem Crossing in Twisted π-Conjugated Perylene Bisimides for High-Performance Photochemical Applications.Angewandte Chemie (International ed. in English) · 2026Article
- Modular Core-Substituted Naphthalenediimide-Based Metal-Organic Frameworks for Red-Light-Driven Photocatalysis.Angewandte Chemie (International ed. in English) · 2026Article
- pH-modulating binary hydrogen-bonded organic frameworks accelerate diabetic wound healing.Journal of nanobiotechnology · 2026Article
- Kinetics vs Thermodynamics: Engineering Photoredox Reactivity from an Upper Excited State of FeJournal of the American Chemical Society · 2026Article
- Lighting Up DNA in the Near-Infrared: An Os(II)-pydppn Complex with Light-Switch Behavior.Molecules (Basel, Switzerland) · 2025Article
- Spin-State and Reorganization Energy Considerations for Metal-Centered Photoredox Catalysis.Journal of the American Chemical Society · 2025Article
- Efficient Red Light-Driven Singlet Oxygen Photocatalysis with an Osmium-Based Coulombic Dyad.Angewandte Chemie (International ed. in English) · 2025Article
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Authors and funding
4 authors.
Funding
Abstract
Photoactive osmium complexes are widely used sensitizers for the generation of singlet oxygen because they can be excited directly into their triplet states with low-energy red light. However, their short-lived excited states reduce quenching efficiencies and reaction quantum yields significantly. To elongate the excited state lifetime, osmium complexes have been linked to organic chromophores to form molecular dyads. This approach, although effective, is time- and resource-consuming, hampering larger-scale applications. Here, we demonstrate a straightforward approach by directly mixing a readily available cationic osmium complex and an anionic perylene derivative in solution. Strong Coulombic interactions facilitate rapid energy transfer (∼100 ps) from the excited osmium complex to the perylene derivative, mimicking a dyad-like system. Detailed spectroscopic investigations revealed an increased singlet oxygen formation rate by over one order of magnitude at sub-millimolar perylene concentrations, attributed to i) the three orders of magnitude longer lifetime of the perylene triplet state produced via intra-ion-pair energy transfer and ii) an inherently high singlet oxygen quantum yield of that key species. The novel catalyst system enables highly productive photooxygenations in water and in a MeOH/H
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