Crawford, M.J., Frey, J.G., VanderNoot, T.J. and Zhao, Y.G.
Investigation of transport across an immiscible liquid/liquid interface - Electrochemical and second harmonic generation studies.
Journal of the Chemical Society - Faraday Transactions, 92, (8), . (doi:10.1039/FT9969201369).
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An electrochemical investigation of the transport of the crown ether 4'-nitrobenzo-15-crown-5 across a water/1,2- dichloroethane interface showed that the crown ether did not cross the interface but the complex formed by the crown ether with Na+ did transfer, the peak transfer current increased with increasing [Na+] until all the crown ether was complexed. The in situ interfacial second harmonic generation experiment indicates that, in the absence of Na+, the crown ether is oriented and ordered by the electric field at the interface. The sodium coronate shows a more complex behaviour at the interface.
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