Effects of defect annealing on concentration-dependent ESR spectra from hydrated dimyristoylphosphatidylcholine

Eva Meirovitch, Jack H. Freed

Research output: Contribution to journalArticlepeer-review

Abstract

This work reports the dramatic ESR spectral changes which occur for fully hydrated multilayers of dimyristoylphosphatidylcholine (DMPC) having significant concentrations of spin-label, which have been allowed to anneal over a period of 30 days. The ESR spectra initially show concentration-dependent line broadening but then gradually become characteristic of concentration-independent spectra. Spin concentration measurements show no significant loss of radical concentration. These observations may be related to recent work of Chan and Webb showing that intially there are extensive structural defects, which gradually anneal out in the same time period.

Original languageEnglish
Pages (from-to)1617-1619
Number of pages3
JournalJournal of Physical Chemistry
Volume85
Issue number12
DOIs
StatePublished - 1981
Externally publishedYes

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