Abstract
RADIOACTIVE carbon is utilised commonly to tag compounds used in interfacial studies. As is usual in studies with isotopes of carbon, it has been assumed tacitly that the radioactive surfactant behaves exactly like the untagged or inactive compound. During a study1 of condensed monolayers at the water–air interface, however, a significant kinetic isotope effect was observed in their stability behaviour.
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References
Neuman, R. D., thesis, Institute of Paper Chemistry, Appleton, Wisconsin (1973).
Pinchas, S., and Laulicht, I., Infrared Spectra of Labelled Compounds (Academic Press, London and New York, 1971).
Halevi, E. A., Prog. phys. org. Chem., 1, 109 (1963).
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NEUMAN, R. An interfacial isotope effect. Nature 250, 725–726 (1974). https://doi.org/10.1038/250725a0
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DOI: https://doi.org/10.1038/250725a0
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