ArticleChemical science2023
PDI-trityl dyads as photogenerated molecular spin qubit candidates.
Article in Chemical science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Synthesis and Characterization of Pyridine-Containing Tetrathiatriarylmethyl (TAM) Stable Radicals for Biomedical Magnetic Resonance Applications.The Journal of organic chemistry · 2026Article
- Light-Activated Qubit Coupling in a Vanadyl Porphyrin Trimer.Journal of the American Chemical Society · 2026Article
- High-Fidelity quantum teleportation mediated by hole transfer in an acceptor-donor-radical molecular triad.Nature communications · 2026Article
- Multispin Photoexcited State and Generation of Dynamic Electron Spin Polarization Observed in Anthracene-Radical-Linked Systems with Extended π-Conjugated Spin Coupler.Journal of the American Chemical Society · 2025Article
- Coherent Control over Nuclear Hyperpolarization Using an Optically Initializable Chromophore-Radical System.Journal of the American Chemical Society · 2025Article
- Reversible excited state electron transfer in an acceptor-acceptor hetero dyad.Chemical science · 2025Article
- Supramolecular dyads as photogenerated qubit candidates.Nature chemistry · 2025Article
- Room-Temperature Optical Spin Polarization of an Electron Spin Qudit in a Vanadyl-Free Base Porphyrin Dimer.Journal of the American Chemical Society · 2025Article
- Spin-bearing molecules as optically addressable platforms for quantum technologies.Nanophotonics (Berlin, Germany) · 2024Review
- Stable organic radical qubits and their applications in quantum information science.Innovation (Cambridge (Mass.)) · 2024Review
- Influence of the substitution position on spin communication in photoexcited perylene-nitroxide dyads.Chemical science · 2024Article
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9 authors.
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Abstract
Owing to their potential applications in the field of quantum information science, photogenerated organic triplet-radical conjugates have attracted an increasing amount of attention recently. Typically, these compounds are composed of a chromophore appended to a stable radical. After initialisation of the system by photoexcitation, a highly spin-polarised quartet state may be generated, which serves as a molecular spin qubit candidate. Here, we investigate three perylene diimide (PDI)-based chromophore-radical systems with different phenylene linkers and radical counterparts by both optical spectroscopy and transient electron paramagnetic resonance (EPR) techniques. Femtosecond transient absorption measurements demonstrate chromophore triplet state formation on a picosecond time scale for PDI-trityl dyads, while excited state deactivation is found to be slowed down considerably in a PDI-nitroxide analogue. The subsequent investigation of the coherent spin properties by transient EPR confirms quartet state formation by triplet-doublet spin mixing for all investigated dyads and the suitability of the two studied PDI-trityl dyads as spin qubit candidates. In particular, we show that using tetrathiaryl trityl as the radical counterpart, an intense spin polarisation is observed even at room temperature and quartet state coherence times of 3.0 μs can be achieved at 80 K, which represents a considerable improvement compared to previously studied systems.
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