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Applications of EPR to heterogeneous systems

✍ Scribed by Michel Che; Younés Ben Taarit

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
987 KB
Volume
23
Category
Article
ISSN
0001-8686

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✦ Synopsis

The applications of EPR to heterogeneous systems are illustrated by examples which include the determination of oxidation state, the ion migration and the formation of ion pairs in solid-solid systems; the study of surface redox properties via radical formation in solid-liquid systems; the determination of the surface crystal field, the nature of the catalytic site and its coordination number and the mobility of the adsorbed species in solid-gas systems; the determination of the adsorption site in oxygen carriers in liquid-liquid systems and liquid-gas systems.

The example of the coordination chemistry of paramagnetic ions in zeolites will be used to illustrate the case of the more complex solidliquid-gas system.

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Distance Determination in Heterogeneous
Distance Determination in Heterogeneous DNA Model Systems by Pulsed EPR
✍ Richard Ward; David J. Keeble; Hassane El-Mkami; David G. Norman 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 775 KB

## Abstract Many biological systems, especially those based on nucleic acids, are structurally heterogeneous in solution. We demonstrate here the ability to measure multiple distances, of between 2 and 7 nm, from a heterogeneous mixture of double‐spin‐labeled DNA duplexes. We have constructed a DNA