TY - JOUR
T1 - Hyperfine shift NMR studies of hydrated phospholipid inverted micelles
AU - Chen, Shuenn Tzong
AU - Springer, Charles S.
N1 - Funding Information:
We would like to thankt heN ationalS cienceF oundationfo r supporto f this work throughG rantNo. PCM7600193W. e would also like to thank Nils Petersenfo r helpingu s out of a cul-de-saicn the interpretatioonf theser esults.
PY - 1979/1
Y1 - 1979/1
N2 - The 31P nuclear magnetic resonance (NMR) spectra of benzene solutions of hydrated dipalmitoyl lecithin (DPL) inverted micelles, with and without incorporated paramagnetic lanthanide ions, have been recorded. Individual resonances for micelles containing none, one, and two ions can be resolved and observed in the presence of one another. The relative intensities of these peaks yield some information on the state of aggregation of lipid inverted micelles prepared by ultrasonic irradiation. The relative intensities and chemical shifts of resonances of unsonicated mixtures of preformed micelles containing different numbers of ions per micelle indicate that some kind of equilibration occurs. The data are consistent with a selective fusion of multi-ion micelles with ion-free micelles. The NMR spectra place constraints on the lifetimes of metal ions and lipid and water molecules within a micelle before transfer to another.
AB - The 31P nuclear magnetic resonance (NMR) spectra of benzene solutions of hydrated dipalmitoyl lecithin (DPL) inverted micelles, with and without incorporated paramagnetic lanthanide ions, have been recorded. Individual resonances for micelles containing none, one, and two ions can be resolved and observed in the presence of one another. The relative intensities of these peaks yield some information on the state of aggregation of lipid inverted micelles prepared by ultrasonic irradiation. The relative intensities and chemical shifts of resonances of unsonicated mixtures of preformed micelles containing different numbers of ions per micelle indicate that some kind of equilibration occurs. The data are consistent with a selective fusion of multi-ion micelles with ion-free micelles. The NMR spectra place constraints on the lifetimes of metal ions and lipid and water molecules within a micelle before transfer to another.
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U2 - 10.1016/0009-3084(79)90020-3
DO - 10.1016/0009-3084(79)90020-3
M3 - Article
AN - SCOPUS:49249142776
SN - 0009-3084
VL - 23
SP - 23
EP - 40
JO - Chemistry and Physics of Lipids
JF - Chemistry and Physics of Lipids
IS - 1
ER -