✦ LIBER ✦

Spin—lattice relaxation of 2H2O at amphiphile/water interfaces as seen by NMR

✍ Scribed by S. Eisenblätter; J. Galle; F. Volke

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 440 KB
Volume: 228
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00901-5

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✦ Synopsis

A simple two-state model is proposed describing the mean spin-lattice relaxation time rI of 2H20 at amphiphile/water interfaces. The dependence of the relaxation times on hydration is fitted for 2Hr0/DOPC, 2H20/POPC and 2H20/C,2E4 samples. Estimations of effective binding energies of water are obtained from the model being in the range of known values determined by quantum chemical calculations and sorption measurements. Therefore, spin-lattice relaxation time measurements on interface water may prove a tool for characterizing the surface energy conditions in a variety of amphiphile/water systems.

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