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Adsorbed Molecules on Solvated Layer Silicates: Surface Mobility and Orientation from ESR Studies

Published online by Cambridge University Press:  01 July 2024

M. B. McBride
M. B. McBride*
Affiliation:
Department of Agronomy, Cornell University, Ithaca, New York, U.S.A.
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Abstract

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The adsorption of nitroxide spin probes on smectites solvated in liquids of greatly different polarity was studied using electron spin resonance (ESR) spectroscopy. Adsorbed probes demonstrate various degrees of restricted rotational motion and alignment at the silicate surfaces, depending upon the properties of the solvating liquid. The results are interpreted in terms of direct surface—molecule interaction modified by solvent competition effects. A fraction of the probe molecules is immobilized in many of the solvated clays because of small spacings between platelets. The data indicate lowered reactivity of surface-adsorbed molecules, especially in the case of hydrated smectites.

Type
Research Article
Information
Clays and Clay Minerals , Volume 25 , Issue 1 , February 1977 , pp. 6 - 13
Copyright
Copyright © Clay Minerals Society 1977

References

Barrer, R. M. and Brummer, K. (1963) Relations between partial ion exchange and interlamellar sorption in alkylammonium montmorillonites: Trans. Faraday Soc. 59, 959–968.CrossRefGoogle Scholar
Berkheiser, V. and Mortland, M. M. (1975) Variability in exchange ion position in smectite: dependence on interlayer solvent: Clays & Clay Minerals 23, 404–410.CrossRefGoogle Scholar
Chignell, C. F. (1974) The application of electron spin resonance and spin-labelling in biochemistry and pharmacology: Aldrichimica Acta 7, 1–6.Google Scholar
Farmer, V. C. and Russell, J. D. (1971) Interlayer complexes in layer silicates. The structure of water in lamellar ionic solutions: Trans. Faraday Soc. 67, 2737–2749.CrossRefGoogle Scholar
Griffith, O. H., Libertini, L. J. and Birrell, G. B. (1971) The role of lipid spin labels in membrane biophysics: J. Phys. Chem. 75, 3417–3425.CrossRefGoogle ScholarPubMed
Hwang, J. S., Mason, R. P., Hwang, L. and Freed, J. H. (1975) Electron spin resonance studies of anisotropic rotational reorientation and slow tumbling in liquid and frozen media. III. Perdeuterated 2,2,6,6-tetramethyl-4-piperidone N-oxide and an analysis of fluctuating torques: J. Phys. Chem. 79, 489–511.CrossRefGoogle Scholar
Jost, P., Libertini, L. J., Hebert, V. C. and Griffith, O. H. (1971) Lipid spin labels in lecithin multilayers. A study of motion along fatty acid chains: J. Mol. Biol. 59, 77–98.CrossRefGoogle ScholarPubMed
Keith, A. D. and Snipes, W. (1974) Viscosity of cellular protoplasm: Science 183, 666–668.CrossRefGoogle ScholarPubMed
McBride, M. B. (1976) Nitroxide spin probes on smectite surfaces. Temperature and solvation effects on the mobility of exchange cations: J. Phys. Chem. 80, 196–203.CrossRefGoogle Scholar
McBride, M. B. and Mortland, M. M. (1973) Segregation and exchange properties of alkylammonium ions in a smectite and vermiculite: Clays & Clay Minerals 21, 323–329.CrossRefGoogle Scholar
McBride, M. B. and Mortland, M. M. (1975) Surface properties of mixed Cu(II)-tetraalkylammonium montmorillonites: Clay Minerals 10, 357–368.CrossRefGoogle Scholar
McBride, M. B., Pinnavaia, T. J. and Mortland, M. M. (1975) Electron spin relaxation and the mobility of manganese (II) exchange ions in smectites: Am. Mineral. 60, 66–72.Google Scholar
Sachs, F. and Latorre, R. (1974) Cytoplasmic solvent structure of single barnacle muscle cells studied by electron spin resonance: Biophys. J. 14, 316–326.CrossRefGoogle ScholarPubMed
Snipes, W., Cupp, J., Cohn, G. and Keith, A. (1974) Electron spin resonance analysis of the nitroxide spin label 2,2,6,6-tetramethylpiperidone-N-oxyl (TEMPONE): Biophys. J. 14, 20–32.CrossRefGoogle ScholarPubMed
Theng, B. K. G. (1974) The Chemistry of Clay—Organic Reactions. Wiley, New York.Google Scholar