Results 261 to 270 of about 207,495 (287)
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Mechanism of primary and secondary ion-radical pair formation in photosystem I complexes
Biochemistry (Moscow), 2014The mechanisms of the ultrafast charge separation in reaction centers of photosystem I (PS I) complexes are discussed. A kinetic model of the primary reactions in PS I complexes is presented. The model takes into account previously calculated values of redox potentials of cofactors, reorganization energies of the primary P700(+)A0(-) and secondary P700(
G E, Milanovsky +3 more
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Journal of Magnetic Resonance (1969), 1985
Abstract It is shown that the conventional use of an equation in which the electron spin polarization is dependent simply upon the square root of the magnetic mixing parameter, Q (see text), is inadequate to account for pure radical pair mechanism polarization effects in isopropyl radicals, and by implication most radicals.
K.A McLauchlan, D.G Stevens
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Abstract It is shown that the conventional use of an equation in which the electron spin polarization is dependent simply upon the square root of the magnetic mixing parameter, Q (see text), is inadequate to account for pure radical pair mechanism polarization effects in isopropyl radicals, and by implication most radicals.
K.A McLauchlan, D.G Stevens
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On the mechanism of multiplet CIDEP in radical ion pairs
Chemical Physics Letters, 1997It is shown that multiplet chemically induced dynamic electron polarization (CIDEP) in radical ion pairs is unlikely to be caused by electron spin exchange (J>0), unless the rate of electron transfer is slowed down either by exciplex formation or by a low Franck-Condon factor.
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Radical Pair Mechanism of Chemically Induced Magnetic Polarization
1977Chemically induced magnetic polarization (CIMP) refers to various processes whereby free radical reactions in liquids lead to nonequilibrium population of the nuclear spin states of the products and reactants, and similar anomalies in the electron spin state population of the free radical intermediates.
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On the mechanism of antiphase electron spin resonance spectra of radical pairs
The Journal of Chemical Physics, 1998We have investigated the origin of the antiphase structure of the mw-induced ESR spectrum of a radical pair in a micelle. By applying an accurate numerical method we have examined various specially designed cases that clearly distinguish between the proposed mechanisms for the production of antiphase structure.
A. A. Neufeld, J. Boiden Pedersen
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ChemInform Abstract: CIDNP EVIDENCE FOR RADICAL PAIR MECHANISM IM PHOTO‐FRIES REARRANGEMENT
Chemischer Informationsdienst, 1973AbstractBei der Bestrahlung des pKresylfp‐chlorbenzoates (I) erhält man unter Annahme der Zwischenstufe (II) sowie (III) und (V) die beiden Reaktionsprodukte (IV) und (VI), deren Bildung unter verschiedenen Bedingungen untersucht wird.
W. ADAM, J. A. DE SANABIA, H. FISCHER
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Spin-Correlated Radical Pairs as Quantum Sensors of Bidirectional ET Mechanisms in Photosystem I
The Journal of Physical Chemistry B, 2019Following light-generated electron transfer reactions in photosynthetic reaction center proteins, an entangled spin qubit (radical) pair is created. The exceptional sensitivity of entangled quantum spin states to weak magnetic interactions, structure, and local environments was used to monitor the directionality of electron transfer in Photosystem I ...
Oleg G. Poluektov +2 more
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Radical pair mechanism of CIDEP generation. Contribution of the dipole—dipole interaction
Chemical Physics Letters, 1991Abstract The effect of the electron dipole—dipole interaction (DDI) in multiplet chemically induced dynamic electron polarization (CIDEP) generated in radical pair (RP) recombination is investigated. It is demonstrated within some models that DDI results in multiplet CIDEP like exchange interaction (EI) but of the sign opposite to that of EI induced ...
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Electromagnetic fields, genomic instability and the radical pair mechanism
Toxicology Letters, 2017Jukka Juutilainen +4 more
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A theorem in radical pair mechanism electron spin polarization (CIDEP)
Journal of Magnetic Resonance (1969), 1984C.D Buckley, K.A McLauchlan
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