Structure of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>L</mi></mrow><mrow><mrow><msup><mrow><mi>c</mi></mrow><mrow><mo>′</mo></mrow></msup></mrow></mrow></msub></mrow></math></span> Phase in a Hydrated Lipid Multilamellar System

V. A. Raghunathan; J. Katsaras

doi:10.1103/PhysRevLett.74.4456

Structure of the $L_{c^{'}}$ Phase in a Hydrated Lipid Multilamellar System

V. A. Raghunathan and J. Katsaras

Phys. Rev. Lett. 74, 4456 – Published 29 May 1995

Abstract

In this Letter we establish the structure of the $L_{c^{'}}$ phase exhibited by the lipid dipalmitoylphosphatidylcholine (DPPC) under hydration. On the basis of x-ray diffraction data on oriented multibilayers, we show that the structure of this phase is characterized by two lattices: a molecular superlattice and a hydrocarbon chain sublattice. Diffraction data available in the literature suggest the presence of similar molecular superlattices in the $L_{c^{'}}$ phase of various other lipid-water systems.

Received 11 July 1994

DOI:https://doi.org/10.1103/PhysRevLett.74.4456

Authors & Affiliations

V. A. Raghunathan¹ and J. Katsaras²

¹Centre de Recherche Paul Pascal-CNRS, Avenue A. Schweitzer, F-33600 Pessac, France
²Raman Research Institute, Bangalore, 560 080, India
³Atomic Energy of Canada Limited, Chalk River, Ontario, K0J 1P0, Canada