Christiane Timmel

Christiane Timmel
Born	Christiane Renate Timmel
Alma mater	TU Dresden University of Oxford (DPhil)
Awards	Royal Society University Research Fellowship Tilden Prize (2020)
Scientific career
Fields	Electron Spin Resonance Magnetoreception[1]
Institutions	University of Oxford
Thesis	Magnetic field effects on radical pair reactions (1998)
Doctoral advisor	Peter Hore
Website	timmel.chem.ox.ac.uk

Christiane Renate Timmel is a German chemist who is Director of the Centre for Advanced Electron Spin Resonance at the University of Oxford.^[2][3] Her group make use of electron-spin resonance to understand long-range structures in chemical and biological systems. Timmel was awarded the Tilden Prize on 2020 by the Royal Society of Chemistry for her contributions to electron spin resonance.

Early life and education

Timmel was born in Saxony, Germany. She has said she was inspired to become a scientist by her parents, a mathematician and a chemist.^[4] Timmel studied physical chemistry at TU Dresden. After earning her diploma she moved to the University of Oxford, where she worked in the laboratory of Peter Hore. In 1998 she completed her doctoral degree on the effects of magnetic fields on radical pair reactions.^[5]

Research and career

After graduating, Timmel was awarded a Royal Society University Research Fellowship at St Hilda's College, Oxford. In 2005 she moved to New College, Oxford^[6] where she was promoted to Professor of Chemistry.^[when?][6] She has studied the impacts of magnetic fields on chemical interactions. For example, during radical pair mechanism, radicals are generated in a singlet or triplet state, typically by photolysis, due to the conservation of total spin angular momentum. In this reaction, the efficiency of singlet–triplet conversion is known to be impacted by magnetic fields. Timmel has shown that magnetic fields of strengths comparable to that of the Earth's magnetic field can impact the outcome of reactions. In the radical pair mechanism, Timmel has shown that the relative orientation of molecules with respect to an applied magnetic field can impact the reaction kinetics. In an effort to understand bird migration, Timmel has investigated the magnetic field responses of various proteins, including those in the photolyase and the blue-sensitive cryptochrome families.^[7]

Alongside her own research, Timmel directs the Centre for Advanced Electron Spin Resonance (CAESR) at the University of Oxford, which she founded in 2007. There she develops low and zero-field equipment for electron-spin resonance, as well as pulsed and continuous-mode spectrometers.^[7] Beyond her leadership of CAESR, Timmel chairs the Royal Society of Chemistry Electron Spin Resonance group.^[8]

In 2020 Timmel was awarded the Royal Society of Chemistry Tilden Prize for her contributions to electron-spin resonance.^[4]

Publications

Timmel's publications^[2][3] include:

• Chemical Compass Model for Avian Magnetoreception as a Quantum Coherent Device^[9]
• Magnetically sensitive light-induced reactions in cryptochrome are consistent with its proposed role as a magnetoreceptor^[1]
• Chemical Magnetoreception: Bird Cryptochrome 1a Is Excited by Blue Light and Forms Long-Lived Radical-Pairs^[10]

Personal life

Timmel serves as a school governor at New College School in Oxford, where she was formerly a parent.^[11]

References

1. Maeda, Kiminori; Robinson, Alexander J.; Henbest, Kevin B.; Hogben, Hannah J.; Biskup, Till; Ahmad, Margaret; Schleicher, Erik; Weber, Stefan; Timmel, Christiane R.; Hore, P. J. (2012). "Magnetically sensitive light-induced reactions in cryptochrome are consistent with its proposed role as a magnetoreceptor". Proceedings of the National Academy of Sciences. 109 (13): 4774–4779. Bibcode:2012PNAS..109.4774M. doi:10.1073/pnas.1118959109. ISSN 0027-8424. PMC 3323948. PMID 22421133.
2. Christiane Timmel publications from Europe PubMed Central
3. Christiane Timmel publications indexed by the Scopus bibliographic database. (subscription required)
4. "Professor Christiane Timmel | Tilden Prize winner 2020". rsc.org. Royal Society of Chemistry. Retrieved 2020-11-16.
5. Timmel, Christiane Renate (1998). Magnetic field effects on radical pair reactions. ox.ac.uk (DPhil thesis). University of Oxford. OCLC 556790900. EThOS uk.bl.ethos.267955.
6. "Christiane Timmel | New College". www.new.ox.ac.uk. Retrieved 2020-11-16.
7. "Dr C. R. Timmel - Research Guides". research.chem.ox.ac.uk. Retrieved 2020-11-16.
8. "RSC ESR Group – Electron Spin Resonance Spectroscopy Group of the Royal Society of Chemistry". Retrieved 2020-11-16.
9. Cai, Jianming; Plenio, Martin B. (2013). "Chemical Compass Model for Avian Magnetoreception as a Quantum Coherent Device". Physical Review Letters. 111 (23): 230503. arXiv:1304.4143. Bibcode:2013PhRvL.111w0503C. doi:10.1103/physrevlett.111.230503. ISSN 0031-9007. PMID 24476240. S2CID 22085536.
10. Liedvogel, Miriam; Maeda, Kiminori; Henbest, Kevin; Schleicher, Erik; Simon, Thomas; Timmel, Christiane R.; Hore, P. J.; Mouritsen, Henrik (2007). "Chemical Magnetoreception: Bird Cryptochrome 1a Is Excited by Blue Light and Forms Long-Lived Radical-Pairs". PLOS ONE. 2 (10): e1106. Bibcode:2007PLoSO...2.1106L. doi:10.1371/journal.pone.0001106. ISSN 1932-6203. PMC 2040520. PMID 17971869.
11. "Who We Are". newcollegeschool.org. New College School. Archived from the original on 2017-11-21. Retrieved 2020-11-16.