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.
|Number of pages||3|
|Journal||Journal of Physical Chemistry|
|State||Published - 1981|