Aqueous sample in an EPR cavity: Sensitivity considerations

Journal of Magnetic Resonance

Volumn 167, Issue 1, 2004, Pages 138-146

  Nesmelov, Yuri E ^a   Gopinath, Anand ^b   Thomas, David D ^a  

^a UNIVERSITY OF MINNESOTA MEDICAL SCHOOL   (United States)

^b UNIVERSITY OF MINNESOTA   (United States)

Author keywords

Cavity; EPR; Field distribution; Sensitivity; Water

Indexed keywords

DIELECTRIC PROPERTIES; EIGENVALUES AND EIGENFUNCTIONS; MAGNETIC FIELD EFFECTS; MAGNETIC RELAXATION; MICROWAVES; NATURAL FREQUENCIES; PERMITTIVITY; QUARTZ; VECTORS;

CAVITY; FIELD DISTRIBUTION; SENSITIVITY;

PARAMAGNETIC RESONANCE;

WATER;

ALGORITHM; ARTICLE; CHEMICAL MODEL; CHEMISTRY; COMPARATIVE STUDY; ELECTRON SPIN RESONANCE; EVALUATION; INSTRUMENTATION; METHODOLOGY; MICROWAVE RADIATION; RADIOMETRY; REPRODUCIBILITY; SENSITIVITY AND SPECIFICITY; VALIDATION STUDY;

ALGORITHMS; ELECTRON SPIN RESONANCE SPECTROSCOPY; MICROWAVES; MODELS, CHEMICAL; RADIOMETRY; REPRODUCIBILITY OF RESULTS; SENSITIVITY AND SPECIFICITY; WATER;

EID: 1242309868     PISSN: 10907807     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jmr.2003.12.005     Document Type: Article

References (23)

1. Feher G. Sensitivity considerations in microwave paramagnetic resonance absorption techniques. Bell Syst. Tech. J. 36:1957;449-484.
2. Hyde J.S., Froncisz W. Loop gap resonators. Hoff A.J. Advanced EPR: Applications in Biology and Biochemistry. 1989;277-306 Elsevier, Amsterdam.
3. Sahlin M., Graeslund A., Ehrenberg A. Determination of relaxation times for a free radical from microwave saturation studies. J. Magn. Reson. 67:1986;135-137.
4. Altenbach C., Greenhalgh D.A., Khorana H.G., Hubbell W.L. A collision gradient method to determine the immersion depth of nitroxides in lipid bilayers: application to spin-labeled mutants of bacteriorhodopsin. Proc. Natl. Acad. Sci. USA. 91:1994;1667-1671.
5. Haas D.A., Mailer C., Robinson B.H. Using nitroxide spin labels. How to obtain T1e from continuous wave electron paramagnetic resonance spectra at all rotational rates. Biophys. J. 64:1993;594-604.
6. Castner T.G. Jr. Saturation of the paramagnetic resonance of a V center. Phys. Rev. 115:1959;1506-1515.
7. Stoodley L.G. The sensitivity of microwave electron spin resonance spectrometers for use with aqueous solutions. J. Electron. Contr. 14:1963;531-546.
8. Wilmshurst T.H. Electron Spin Resonance Spectrometers. 1967;Adam Hilger, London. p. 130.
9. Dalal D.P., Eaton S.S., Eaton G.R. The effect of lossy solvents on quantitative EPR studies. J. Magn. Reson. 44:1981;415-428.
10. Sueki M., Rinard G.A., Eaton S.S., Eaton G.R. Impact of high-dielectric-loss materials on the microwave field in EPR experiments. J. Magn. Reson. A. 118:1996;173-188.
11. Kaifez D., Guillon P. Dielectric Resonators. 1998;Noble, Atlanta, GA.
12. Nesmelov Yu.E., Surek J.T., Thomas D.D. Enhanced EPR sensitivity from a ferroelectric cavity insert. J. Magn. Reson. 153:2001;7-14.
13. Goldberg I.B., Crowe H.R. Effect of cavity loading on analytical electron spin resonance spectrometry. Anal. Chem. 49:1977;1353-1357.
14. Poole C.P.J. Electron Spin Resonance. 1996;Dover Publications, Mineola, NY.
15. Kaatze U., Uhlendorf V. The dielectric properties of water at microwave frequencies. Z. Phys. Chem. 126:1981;151-165.
16. Gabriel C., Gabriel S., Grant E.H., Halstead B.S.J., Mingos D.M.P. Dielectric parameters relevant to microwave dielectric heating. Chem. Soc. Rev. 27:1998;213-223.
17. Kooser R.G., Volland W.V., Freed J.H. ESR relaxation studies on orbitally degenerate free radicals. I. Benzene anion and tropenyl. J. Chem. Phys. 50:1969;5243-5257.
18. Kelly A.E., Ou H.D., Withers R., Dotsch V. Low-conductivity buffers for high-sensitivity NMR measurements. J. Am. Chem. Soc. 124:2002;12013-12019.
19. Kajfez D., Hwan E.J. Q-factor measurement with network analyzer. IEEE Trans. MTT. 32:1984;666-670.
20. Mett R.R., Hyde J.S. Aqueous flat cells perpendicular to the electric field for use in electron paramagnetic resonance spectroscopy. J. Magn. Res. 165:2003;137-152.
21. Mett R.R., Froncisz W., Hyde J.S. Axially uniform resonant cavity modes for potential use in electron paramagnetic resonance spectroscopy. Rev. Sci. Instrum. 72:2001;4188.
22. Fajer P., Marsh D. Microwave and modulation field inhomogeneities and the effect of cavity Q in saturation transfer ESR spectra. Dependence on sample size. J. Magn. Reson. 49:1982;212-224.
23. Mailer C., Sarna T., Swartz H.M., Hyde J.S. Quantitative studies of free radicals in biology: corrections to ESR saturation data. J. Magn. Res. 25:1977;205-210.