The radical pair mechanism and the avian chemical compass: Quantum coherence and entanglement [PDF]
International Journal of Quantum Chemistry, 2015 We review the spin radical pair mechanism which is a promising explanation of avian navigation. This mechanism is based on the dependence of product yields on (1) the hyperfine interaction involving electron spins and neighboring nuclear spins and (2) the intensity and orientation of the geomagnetic field.
Zhang, Yiteng +2 more
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Upper bound on the biological effects of 50/60 Hz magnetic fields mediated by radical pairs
eLife, 2019 Prolonged exposure to weak (~1 μT) extremely-low-frequency (ELF, 50/60 Hz) magnetic fields has been associated with an increased risk of childhood leukaemia.
PJ Hore
doaj +1 more source
Quantum Zeno Effect Explains Magnetic-Sensitive Radical-Ion-Pair Reactions
, 2009 Chemical reactions involving radical-ion pairs are ubiquitous in biology, since not only are they at the basis of the photosynthetic reaction chain, but are also assumed to underlie the biochemical magnetic compass used by avian species for navigation ...
C. Cohen-Tannoudji +4 more
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First Principles Study of the Ignition Mechanism for Hypergolic Bipropellants: N,N,N′,N′-Tetramethylethylenediamine (TMEDA) and N,N,N′,N′-Tetramethylmethylenediamine (TMMDA) with Nitric Acid [PDF]
, 2011 We report quantum mechanics calculations (B3LYP flavor of density functional theory) to determine the chemical reaction mechanism underlying the hypergolic reaction of pure HNO_3 with N,N,N′,N′-tetramethylethylenediamine (TMEDA) and N,N,N′,N ...
Dasgupta, Siddharth +3 more
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Activation of Cryptochrome 4 from Atlantic Herring
BiologyMarine fish migrate long distances up to hundreds or even thousands of kilometers for various reasons that include seasonal dependencies, feeding, or reproduction. The ability to perceive the geomagnetic field, called magnetoreception, is one of the many
Anders Frederiksen +3 more
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Sensitive Chemical Compass Assisted by Quantum Criticality
, 2011 The radical-pair-based chemical reaction could be used by birds for the navigation via the geomagnetic direction. An inherent physical mechanism is that the quantum coherent transition from a singlet state to triplet states of the radical pair could ...
C. P. Sun +6 more
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Radical Fluoroalkylation Reactions [PDF]
, 2018 Recent protocols and reactions for catalytic radical perfluoroalkylations will be described. The production of perfluoroalkyl radicals (RF = CnF2n+1, n ≥ 2), which effect both addition and substitution reactions on organic substrates, can be realized ...
Barata Vallejo, Sebastian +2 more
core +1 more source
Monte-Carlo wavefunction approach for the spin dynamics of recombining radicals
New Journal of Physics, 2020 We adapt the Monte-Carlo wavefunction (MCWF) approach to treat the open-system spin dynamics of radical pairs subject to spin-selective recombination reactions.
Robert H Keens, Daniel R Kattnig
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Quantum probe and design for a chemical compass with magnetic nanostructures
, 2011 Magnetic fields as weak as Earth's may affect the outcome of certain photochemical reactions that go through a radical pair intermediate. When the reaction environment is anisotropic, this phenomenon can form the basis of a chemical compass and has been ...
D. J. Griffiths +3 more
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Magneto-oncology: a radical pair primer
Frontiers in OncologyThere are few well-established biophysical mechanisms by which external magnetic fields can influence the biochemistry of molecules in living systems. The radical pair mechanism is arguably the most promising.
P. J. Hore
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