ArticleChemistry (Weinheim an der Bergstrasse, Germany)2021
Excitation Energy Transfer and Exchange-Mediated Quartet State Formation in Porphyrin-Trityl Systems.
Article in Chemistry (Weinheim an der Bergstrasse, Germany), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 29 citations in OpenAlex.
- Exploring Single-Molecular Magnets for Quantum Technologies.Molecules (Basel, Switzerland) · 2025Article
- Influence of the substitution position on spin communication in photoexcited perylene-nitroxide dyads.Chemical science · 2024Article
- PDI-trityl dyads as photogenerated molecular spin qubit candidates.Chemical science · 2023Article
- Preparation of Xanthene-TEMPO Dyads: Synthesis and Study of the Radical Enhanced Intersystem Crossing.International journal of molecular sciences · 2023Article
- Distance dependence of enhanced intersystem crossing in BODIPY-nitroxide dyads.Chemical science · 2023Article
- Optical Spin Polarization of a Narrow-Linewidth Electron-Spin Qubit in a Chromophore/Stable-Radical System.Angewandte Chemie (International ed. in English) · 2023Article
- Calculation of exchange couplings in the electronically excited state of molecular three-spin systems.Chemical science · 2022Article
- Accessing the triplet state of perylenediimide by radical-enhanced intersystem crossing.Chemical science · 2022Article
- Excitation Energy Transfer and Exchange-Mediated Quartet State Formation in Porphyrin-Trityl Systems.Chemistry (Weinheim an der Bergstrasse, Germany) · 2021Article
- Improved, Odorless Access to Benzo[1,2-d;4,5-d']- bis[1,3]dithioles andMolecules (Basel, Switzerland) · 2020Article
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7 authors at 4 institutions in 2 countries.
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Abstract
Photogenerated multi-spin systems hold great promise for a range of technological applications in various fields, including molecular spintronics and artificial photosynthesis. However, the further development of these applications, via targeted design of materials with specific magnetic properties, currently still suffers from a lack of understanding of the factors influencing the underlying excited state dynamics and mechanisms on a molecular level. In particular, systematic studies, making use of different techniques to obtain complementary information, are largely missing. This work investigates the photophysics and magnetic properties of a series of three covalently-linked porphyrin-trityl compounds, bridged by a phenyl spacer. By combining the results from femtosecond transient absorption and electron paramagnetic resonance spectroscopies, we determine the efficiencies of the competing excited state reaction pathways and characterise the magnetic properties of the individual spin states, formed by the interaction between the chromophore triplet and the stable radical. The differences observed for the three investigated compounds are rationalised in the context of available theoretical models and the implications of the results of this study for the design of a molecular system with an improved intersystem crossing efficiency are discussed.
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