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Molecular Physics
An International Journal at the Interface Between Chemistry and Physics
Volume 111, 2013 - Issue 18-19: Modern EPR Spectroscopy
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Invited Articles

Examples for biological reactivity involving free radicals followed by CIDNP

Inmaculada AndreuDepartamento de Química-Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Valencia, Spain
,
Dmytro NeshchadinInstitute of Physical and Theoretical Chemistry, Graz University of Technology, Graz, Austria
,
Stephen N. BatchelorUnilever Research Port Sunlight, Quarry Road East, Bebington, UK
,
Miguel A. MirandaDepartamento de Química-Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Valencia, Spain
&
Georg GescheidtInstitute of Physical and Theoretical Chemistry, Graz University of Technology, Graz, AustriaCorrespondence[email protected]
Pages 2992-2998 | Received 20 Mar 2013, Accepted 24 May 2013, Published online: 01 Jul 2013
 
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Abstract

It is shown how chemically induced dynamic nuclear polarisation (CIDNP) spectroscopy is able to efficiently complement electron paramagnetic resonance (EPR), when molecular transformations of free radical pairs are investigated. This is demonstrated in three examples of modelling biologically relevant phenomena, particularly oxidative stress and antioxidant activity. Lipid peroxidation, topological control in the oxidation of cholesterol, and a mechanistic study of antioxidant activity of natural tea and wine polyphenols are presented.

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