ArticleNature communications2021
Electron spin resonance resolves intermediate triplet states in delayed fluorescence.
Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- TADF-Active Tetrazole Luminophores for Visible-Light Functionalization of Nanoparticles and Surfaces.Angewandte Chemie (International ed. in English) · 2026Article
- Thermally activated delayed fluorescence (TADF) compounds in energy transfer processes. A general alternative to metal-based complexes.Green chemistry : an international journal and green chemistry resource : GC · 2026Review
- Unveiling the emission mechanism in analog-doped carbazole-based organic afterglow materials.Nature communications · 2026Article
- Effect of Thionation of the Carbonyl Groups in Naphthalimide-Phenoxazine Electron Donor-Acceptor Dyads on the Excited- State Dynamics: Transient Optical and Electron Paramagnetic Resonance Spectral Studies.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025Article
- Radical TADF: Quartet-Derived Luminescence with Dark TEMPO.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Teacups, a Python Package for the Simulation of Time-Resolved EPR Spectra of Spin-Polarized Multi-Spin Systems.The journal of physical chemistry. A · 2025Article
- Conformational Control of Donor-Acceptor Molecules Using Non-covalent Interactions.The journal of physical chemistry. A · 2024Article
- Photophysics and photochemistry of thermally activated delayed fluorescence emitters based on the multiple resonance effect: transient optical and electron paramagnetic resonance studies.Chemical science · 2024Article
- Understanding of complex spin up-conversion processes in charge-transfer-type organic molecules.Nature communications · 2024Article
- Enhancing operational stability of OLEDs based on subatomic modified thermally activated delayed fluorescence compounds.Nature communications · 2023Article
- The effect of dark states on the intersystem crossing and thermally activated delayed fluorescence of naphthalimide-phenothiazine dyads.Beilstein journal of organic chemistry · 2023Article
- Constructing high-efficiency orange-red thermally activated delayed fluorescence emitters by three-dimension molecular engineering.Nature communications · 2022Article
- Dielectric control of reverse intersystem crossing in thermally activated delayed fluorescence emitters.Nature materials · 2022Article
- Long-Lived Charge-Transfer State in Spiro Compact Electron Donor-Acceptor Dyads Based on Pyromellitimide-Derived Rhodamine: Charge Transfer Dynamics and Electron Spin Polarization.Angewandte Chemie (International ed. in English) · 2022Article
- Naphthalimide-phenothiazine dyads: effect of conformational flexibility and matching of the energy of the charge-transfer state and the localized triplet excited state on the thermally activated delayed fluorescence.Beilstein journal of organic chemistry · 2022Article
Corrections and comments
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Authors and funding
14 authors.
Funding
Abstract
Molecular organic fluorophores are currently used in organic light-emitting diodes, though non-emissive triplet excitons generated in devices incorporating conventional fluorophores limit the efficiency. This limit can be overcome in materials that have intramolecular charge-transfer excitonic states and associated small singlet-triplet energy separations; triplets can then be converted to emissive singlet excitons resulting in efficient delayed fluorescence. However, the mechanistic details of the spin interconversion have not yet been fully resolved. We report transient electron spin resonance studies that allow direct probing of the spin conversion in a series of delayed fluorescence fluorophores with varying energy gaps between local excitation and charge-transfer triplet states. The observation of distinct triplet signals, unusual in transient electron spin resonance, suggests that multiple triplet states mediate the photophysics for efficient light emission in delayed fluorescence emitters. We reveal that as the energy separation between local excitation and charge-transfer triplet states decreases, spin interconversion changes from a direct, singlet-triplet mechanism to an indirect mechanism involving intermediate states.
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