Hyperfine shift NMR studies of hydrated phospholipid inverted micelles

Shuenn Tzong Chen, Charles Jr Springer

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)23-40
Number of pages18
JournalChemistry and Physics of Lipids
Volume23
Issue number1
DOIs
StatePublished - 1979
Externally publishedYes

Fingerprint

Micelles
Phospholipids
Magnetic Resonance Spectroscopy
Nuclear magnetic resonance
Ions
Lipids
Lanthanoid Series Elements
Lecithins
Chemical shift
Benzene
Ultrasonics
Metal ions
Fusion reactions
Agglomeration
Metals
Irradiation
Molecules
Water

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics

Cite this

Hyperfine shift NMR studies of hydrated phospholipid inverted micelles. / Chen, Shuenn Tzong; Springer, Charles Jr.

In: Chemistry and Physics of Lipids, Vol. 23, No. 1, 1979, p. 23-40.

Research output: Contribution to journalArticle

@article{a7e047d14f914d739ffeced3c0d3a8c8,
title = "Hyperfine shift NMR studies of hydrated phospholipid inverted micelles",
abstract = "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.",
author = "Chen, {Shuenn Tzong} and Springer, {Charles Jr}",
year = "1979",
doi = "10.1016/0009-3084(79)90020-3",
language = "English (US)",
volume = "23",
pages = "23--40",
journal = "Chemistry and Physics of Lipids",
issn = "0009-3084",
publisher = "Elsevier Ireland Ltd",
number = "1",

}

TY - JOUR

T1 - Hyperfine shift NMR studies of hydrated phospholipid inverted micelles

AU - Chen, Shuenn Tzong

AU - Springer, Charles Jr

PY - 1979

Y1 - 1979

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.

UR - http://www.scopus.com/inward/record.url?scp=49249142776&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=49249142776&partnerID=8YFLogxK

U2 - 10.1016/0009-3084(79)90020-3

DO - 10.1016/0009-3084(79)90020-3

M3 - Article

AN - SCOPUS:49249142776

VL - 23

SP - 23

EP - 40

JO - Chemistry and Physics of Lipids

JF - Chemistry and Physics of Lipids

SN - 0009-3084

IS - 1

ER -