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Triplet Born Radical Pairs and the Low Field Effect

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Abstract

The importance of photochemical reactions proceeding through the formation of spin-correlated radical pairs is becoming increasingly apparent, due to their roles in biological magnetic field sensing and optoelectronic devices. Here, we consider the spin-dynamics of triplet born radical pairs under varying weak magnetic field conditions and in doing so provide a simplified model for understanding the low field effect by identifying triplet states that cannot undergo coherent mixing to singlet states in zero magnetic field.

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Code Availability

The code used for the simulations described in this work is available from the corresponding author on reasonable request.

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Funding

This work was supported by the Japan Society for the Promotion of Science (JSPS) Grants-in-Aid for Scientific Research (Grant number 20H02687).

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Authors and Affiliations

  1. Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan

    Jonathan R. Woodward

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  1. Jonathan R. Woodward
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J. R. Woodward did all research and wrote the manuscript.

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Correspondence to Jonathan R. Woodward.

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Woodward, J.R. Triplet Born Radical Pairs and the Low Field Effect. Appl Magn Reson 54, 47–58 (2023). https://doi.org/10.1007/s00723-022-01485-9

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