Ether-linked lipids: Spin-label EPR and spin echoes
نویسندگان
چکیده
منابع مشابه
Spin Echoes
Intense radiofrequency power in the form of pulses is applied to an ensemble of spins in a liquid placed in a large static magnetic Geld H&. The frequency of the pulsed r-f power satisGes the condition for nuclear magnetic resonance, and the pulses last for times which are short compared with the time in which the nutating macroscopic magnetic moment of the entire spin ensemble can decay. After...
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The sensitivity of continuous-wave, non-linear EPR signals to spin–lattice (T1) relaxation has been investigated. The aim was to identify those spectral displays that are most appropriate to obtain structural and dynamic information from spin-label EPR experiments that involve detection of T1-relaxation enhancements. This has been achieved by solving the Bloch equations for the various harmonic...
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Pulsed nuclear magnetic resonance techniques with transverse radiofrequency pulses are used to determine the spin-lattice and spin-spin relaxation times of glycerol and Fe solutions of varying concentrations. The nuclear magnetic moments of flourine and hydrogen are found to be μH+ = (1.408± .008)× 10−26 J/T and μF− = (1.324± .007)× 10−26 J/T, respectively. A negative linear relation in log-log...
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Following the widely spread EPR spin-label applications for biosystem characterization, a novel approach is proposed for EPR-based characterization of biosystem complexity. Hereto a computational method based on a hybrid evolutionary optimization (HEO) is introduced. The enormous volume of information obtained from multiple HEO runs is reduced with a novel so-called GHOST condensation method fo...
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We define a quantity, the so-called purity fidelity, which measures the rate of dynamical irreversibility due to decoherence, observed e.g in echo experiments, in the presence of an arbitrary small perturbation of the total (system + environment) Hamiltonian. We derive a linear response formula for the purity fidelity in terms of integrated time correlation functions of the perturbation. Our re...
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ژورنال
عنوان ژورنال: Chemistry and Physics of Lipids
سال: 2018
ISSN: 0009-3084
DOI: 10.1016/j.chemphyslip.2018.01.010