Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

Uri Green; Yulia Shenberger; Zeev Aizenshtat; Haim Cohen; Sharon Ruthstein

doi:10.3791/51548

Journal

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Chemistry

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Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

JoVE Journal
Chemistry

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JoVE Journal Chemistry

Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

10,656 Views

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10:34 min

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April 24, 2014

DOI:

10.3791/51548-v

DOI:

10.3791/51548-v

•

10:34 min

April 24, 2014

•

6 Views

Uri Green^1,2, Yulia Shenberger³, Zeev Aizenshtat¹, Haim Cohen^2,4, Sharon Ruthstein³

¹Chemistry Institute,The Hebrew University of Jerusalem, ²Biological Chemistry Department,Ariel University, ³Chemistry Department, Faculty of Exact Science,Bar Ilan University, ⁴Chemistry Department,Ben-Gurion University

Summary

Stable radicals that are present in carbon substrates interact with paramagnetic oxygen through a Heisenberg spin exchange. This interaction can be significantly reduced under STP conditions by flowing a diamagnetic gas over the carbon system. This manuscript describes a simple method to characterize the nature of those radicals.