Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
14N NMR Spectra Sensitively Reflect Surface Curvature and Segmental Motion of Hydrophilic Headgroups in Lipid Bilayers and Micelles
Emiko OkamuraChihiro WakaiNobuyuki MatubayasiMasaru Nakahara
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1997 Volume 26 Issue 10 Pages 1061-1062

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Abstract

To study the surface curvature dependence of the dynamical structure of the headgroups of phospholipids forming bilayers and micelles, 14N NMR spectra were measured for liposomes of phosphatidylcholine and for micelles of lysophosphatidylcholine. Choline 14N NMR signals were observed for the micelles and small unilamellar vesicles, which involve high surface curvatures. The signals vanished, on the other hand, when the diameter was increased from 55 to 100 nm in unilamellar vesicles.

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© 1997 The Chemical Society of Japan
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