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electron paramagnetic resonance
(redirected from Electron paramagnetic resonance spectroscopy)

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electron paramagnetic resonance: see magnetic resonance magnetic resonance, in physics and chemistry, phenomenon produced by simultaneously applying a steady magnetic field and electromagnetic radiation (usually radio waves) to a sample of atoms and then adjusting the frequency of the radiation and the strength of the
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electron spin resonance (ESR)

 or electron paramagnetic resonance (EPR)

Technique of spectroscopic analysis (see spectroscopy) used to identify paramagnetic substances (see paramagnetism) and investigate the nature of the bonding within molecules by identifying unpaired electrons and their interaction with their immediate surroundings. Unpaired electrons, because of their spin, behave like tiny magnets and can be lined up in an applied magnetic field; energy applied by alternating microwave radiation is absorbed when its frequency coincides with that of precession of the electron magnets in the sample. The graph or spectrum of radiation absorbed as the field changes gives information valuable in chemistry, biology, and medicine.

electron paramagnetic resonance [i′lek‚trän ¦par·ə·mag¦ned·ik ′rez·ən·əns]
(physics)
Magnetic resonance arising from the magnetic moment of unpaired electrons in a paramagnetic substance or in a paramagnetic center in a diamagnetic substance. Abbreviated EPR. Also known as electron spin resonance (ESR); paramagnetic resonance.
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The volume begins with an introduction to basic principles, experimental methods, and applications, followed by chapters on electron paramagnetic resonance spectroscopy in the liquid phase, pulsed electron paramagnetic resonance, electron paramagnetic resonance spectra in the solid state, and ab initio modeling.
Electron paramagnetic resonance; a practitioner's toolkit by SciTech Book News
The interaction of a potent percutaneous penetration enhancer, 1,8-cineole, with the stratum corneum (SC) and DPPC membranes was investigated by electron paramagnetic resonance spectroscopy (EPR) of spin-labeled analogs of stearic acid (5DSA) and androstanol (ASL).
Effects of 1,8-cineole on the dynamics of lipids and proteins of ... by Life Extension
Spin trapping is a method by which researchers can measure free radicals via electron paramagnetic resonance spectroscopy (EPR).
OxisResearch Introduces New Spin Trap for Free Radical Detection by Business Wire
 
 
 
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