Correlation and dynamics of acyl-chain isomerization rotation in di-myristoyl-phosphatidylcholine bilayers

A. Enders and G. Nimtz
Phys. Rev. A 32, 2521 – Published 1 October 1985
PDFExport Citation

Abstract

The dielectric behavior of hydrated di-myristoyl-phosphatitylcholine (DMPO) bilayers was investigated as a function of temperature at frequencies from 4 to 12 GHz. A steplike increase of the dielectric constant occurs at the chain melting phase transition. It is related to a dielectric dispersion due to the onset of the acyl-chain isomerization rotation. The measured dielectric response, with its unexpectedly high values, is interpreted as a cooperative rotational motion within larger chain clusters. A lower limit for the cluster size of at least 250 CH2CH2 bonds with correlated rotation is deduced.

  • Received 10 April 1985

DOI:https://doi.org/10.1103/PhysRevA.32.2521

©1985 American Physical Society

Authors & Affiliations

A. Enders and G. Nimtz

  • II. Physikalisches Institut der Universitat zu Köln, Zülpicherstrasse 77, D-5000 Köln 41, Federal Republic of Germany

References (Subscription Required)

Click to Expand
Issue

Vol. 32, Iss. 4 — October 1985

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×