Raw data for "Efficient red light-driven singlet oxygen photocatalysis with an osmium-based Coulombic dyad"

dc.contributor.authorSchmitz, Matthias
dc.contributor.authorNaumann, Robert
dc.contributor.authorHeinze, Katja
dc.contributor.authorKerzig, Christoph
dc.date.accessioned2025-06-27T07:33:15Z
dc.date.available2025-06-27T07:33:15Z
dc.date.issued2025
dc.description.abstractPhotoactive 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, while 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/H2O 10/1 mixture, highlighting the broad applicability and versatility of the Coulombic dyad approach for photocatalytic synthesis and wastewater treatment.en_US
dc.identifier.doihttps://doi.org/10.25358/openscience-12602
dc.identifier.urihttps://openscience.ub.uni-mainz.de/handle/20.500.12030/12623
dc.identifier.urnurn:nbn:de:hebis:77-0956f6b8-577e-4293-933e-8b5efb8c89358
dc.language.isoeng
dc.rightsCC-BY-4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc540 Chemiede
dc.subject.ddc540 Chemistry and allied sciencesen
dc.titleRaw data for "Efficient red light-driven singlet oxygen photocatalysis with an osmium-based Coulombic dyad"en
dc.typeDatensammlung
jgu.description.methodsExperiments
jgu.organisation.departmentFB 09 Chemie, Pharmazie u. Geowissensch.
jgu.organisation.nameJohannes Gutenberg-Universität Mainz
jgu.organisation.number7950
jgu.organisation.placeMainz
jgu.organisation.rorhttps://ror.org/023b0x485
jgu.relation.IsMetadataFor10.1002/anie.202502840
jgu.rights.accessrightsopenAccess
jgu.subject.ddccode540
jgu.type.dinitypeResearchDataen_GB
jgu.type.resourceText
jgu.type.versionOriginal work

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