Use of Electron Paramagnetic Resonance Spectroscopy to Study Dielectric Properties of Liquids
Joint Authors
Kadam, Rahul S.
Glatzhofer, Daniel T.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-09
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The signal response of an EPR active species is attenuated by the medium it is in.
Keeping all other parameters the same, the higher the dielectric constant of the medium, the lower the EPR signal response.
This behavior is problematic in studying EPR active species in high dielectric media but can be capitalized upon to monitor changes in the dielectric constant or estimate the dielectric constant of the medium.
Using a coaxial EPR cell design, the EPR signal of a stable nitroxyl radical compound (2,2,6,6-tetramethyl-piperidin-1-oxyl radical) in a low dielectric constant solvent in an inner tube is attenuated by the solvent present between the inner and outer tubes (jacket medium).
The attenuation increases monotonically with an increase in the dielectric constant of the jacket medium.
Calibration curves can be constructed using jacket media of known dielectric constants ranging from 2 to 80 and the dielectric constant of a sample used as the jacket medium can be estimated by interpolation.
This technique is applied to estimate the dielectric constants and/or composition of mixed solvents and to monitor the rate of a reaction.
American Psychological Association (APA)
Glatzhofer, Daniel T.& Kadam, Rahul S.. 2012. Use of Electron Paramagnetic Resonance Spectroscopy to Study Dielectric Properties of Liquids. ISRN Analytical Chemistry،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-502941
Modern Language Association (MLA)
Glatzhofer, Daniel T.& Kadam, Rahul S.. Use of Electron Paramagnetic Resonance Spectroscopy to Study Dielectric Properties of Liquids. ISRN Analytical Chemistry No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-502941
American Medical Association (AMA)
Glatzhofer, Daniel T.& Kadam, Rahul S.. Use of Electron Paramagnetic Resonance Spectroscopy to Study Dielectric Properties of Liquids. ISRN Analytical Chemistry. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-502941
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-502941