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Conclusions and Further Work

  • Alan LewisEmail author
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Abstract

There has been significant interest in radical pair reactions for a number of years [1, 2, 3, 4, 5], due to their relevance to a number of biological and technological systems [6, 7, 8, 9, 10, 11]. In particular, the effect of magnetic fields on radical pair reactions has been widely studied [12, 13, 14, 15, 16], with even very weak magnetic interactions able to dramatically change the rate and yield of a reaction [17, 18]. In this thesis, we have developed both quantum mechanical and semiclassical methods of simulating radical pair reactions, and then applied those methods to three real systems in order to obtain some physical insight into their behaviour. Here we shall summarise our findings, before suggesting two areas for further work where the application of the semiclassical theory introduced in Sect.  3.1 has shown promising early results.

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References

  1. 1.
    Kaptein, R., & Oosterhoff, J. (1969). Chemically induced dynamic nuclear polarization II. Chemical Physics Letters, 4, 195–197.Google Scholar
  2. 2.
    Schulten, K., & Wolynes, P. G. (1978). Semi-classical description of electron-spin motion in radicals including effect of electron hopping. Journal of Chemical Physics, 68, 3292–3297.Google Scholar
  3. 3.
    McLauchlan, K. A., & Steiner, U. E. (1991). The spin-correlated radical pair as a reaction intermediate. Molecular Physics, 73, 241–263.Google Scholar
  4. 4.
    Ehrenfreund, E., & Vardeny, Z. V. (2012). Effects of magnetic field on conductance and electroluminescence in organic devices. Israel Journal of Chemistry, 52, 552–562.Google Scholar
  5. 5.
    Hore, P. J., & Mouritsen, H. (2016). The radical-pair mechanism of magnetoreception. Annual Review of Biophysics, 45, 299.Google Scholar
  6. 6.
    Brocklehurst, B., & McLauchlan, K. A. (1996). Free radical mechanism for the effects of environmental electromagnetic fields on biological systems. International Journal of Radiation Biology, 69, 3–24.Google Scholar
  7. 7.
    Wasielewski, M. R. (2006). Energy, charge, and spin transport in molecules and self-assembled nanostructures inspired by photosynthesis. Journal of Organic Chemistry, 71, 5051–5066.Google Scholar
  8. 8.
    Ritz, T., Adem, S., & Schulten, K. (2000). A model for photoreceptor-based magnetoreception in birds. Biophysical Journal, 78, 707–718.Google Scholar
  9. 9.
    Rodgers, C. T., & Hore, P. J. (2009). Chemical magnetoreception in birds: The radical pair mechanism. Proceedings of the National Academy of Sciences of the United States of America, 106, 353–360.Google Scholar
  10. 10.
    Tang, C. W., & Vanslyke, S. A. (1987). Organic electroluminescent diodes. Applied Physics Letters, 51, 913–915.Google Scholar
  11. 11.
    Kido, J. (1999). Organic displays. Physics World, 12, 27–30.Google Scholar
  12. 12.
    Brocklehurst, B. (1976). Magnetic field effect on the pulse shape of scintillations due to geminate recombination of ion pairs. Chemical Physics Letters, 44, 245–248.Google Scholar
  13. 13.
    Weller, A., Nolting, F., & Staerk, H. (1983). A quantitative interpretation of the magnetic field effect on hyperfine-coupling-induced triplet fromation from radical ion pairs. Chemical Physics Letters, 96, 24–27.Google Scholar
  14. 14.
    Weller, A., Staerk, H., & Treichel, R. (1984). Magnetic-field effects on geminate radical-pair recombination. Faraday Discussions of the Chemical Society, 78, 271.Google Scholar
  15. 15.
    Steiner, U. E., & Ulrich, T. (1989). Magnetic field effects in chemical kinetics and related phenomena. Chemical Reviews, 89, 51–147.Google Scholar
  16. 16.
    Till, U., & Hore, P. J. (1997). Radical pair kinetics in a magnetic field. Molecular Physics, 90, 289–296.Google Scholar
  17. 17.
    Timmel, C. R., Till, U., Brocklehurst, B., Mclauchlan, K. A., & Hore, P. J. (1998). Effects of weak magnetic fields on free radical recombination reactions. Molecular Physics, 95, 71–89.Google Scholar
  18. 18.
    Till, U., Timmel, C. R., Brocklehurst, B., & Hore, P. J. (1998). The influence of very small magnetic fields on radical recombination reactions in the limit of slow recombination. Chemical Physics Letters, 298, 7–14.Google Scholar
  19. 19.
    Weiss, E. A., et al. (2004). Making a molecular wire: Charge and spin transport through. Journal of the American Chemical Society, 126, 5577–5584.Google Scholar
  20. 20.
    Marcus, R. A. (1965). On the theory of electron-transfer reactions. VI. Unified treatment for homogeneous and electrode reactions. Journal of Chemical Physics, 43, 679.Google Scholar
  21. 21.
    Lee, A. A., et al. (2014). Alternative radical pairs for cryptochrome-based magnetoreception. Journal of the Royal Society Interface, 11, 20131063.Google Scholar
  22. 22.
    West, A. (2017). Magnetic field effects in carotenoid-porphyrin-fullerene triad molecules part II. Thesis: University of Oxford.Google Scholar
  23. 23.
    Lindoy, L. P. J., & Manolopoulos, D. E. (2017). Electron spin relaxation in the Hilbert space formulation of radial pair recombination reactions. Unpublished manuscript.Google Scholar
  24. 24.
    Vanderstichele, B. (2017). Electron spin relaxation in the semiclassical theory of radical pair reactions part II. Thesis: University of Oxford.Google Scholar
  25. 25.
    Carrington, A., & McLachlan, A. D. (1967). Introduction to magnetic resonance with applications to chemistry and chemical physics. New York: Harper and Row.Google Scholar

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© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.The James Franck InstituteUniversity of ChicagoChicagoUSA

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