TY - JOUR
T1 - [Formula Presented]→[Formula Presented] phase transition in phosphatidylcholine lipid bilayers
T2 - A disorder-order transition in two dimensions
AU - Raghunathan, V. A.
AU - Katsaras, John
PY - 1996
Y1 - 1996
N2 - The structure of the [Formula Presented] phase exhibited by hydrated dipalmitoylphosphatidylcholine (DPPC) was recently determined by Raghunathan and Katsaras [Phys. Rev. Lett. 74, 4456 (1995)] from x-ray diffraction studies on oriented multibilayers. Here, we reanalyze the powder diffraction data reported in the literature on a number of hydrated lipids possessing the phosphatidylcholine headgroup. As in DPPC, the [Formula Presented] phase in all of these systems is found to be characterized by two-dimensional ordering of the lipid molecules on a superlattice of the hydrocarbon chain lattice. We also discuss the influence of headgroup interactions on the structure of this phase.
AB - The structure of the [Formula Presented] phase exhibited by hydrated dipalmitoylphosphatidylcholine (DPPC) was recently determined by Raghunathan and Katsaras [Phys. Rev. Lett. 74, 4456 (1995)] from x-ray diffraction studies on oriented multibilayers. Here, we reanalyze the powder diffraction data reported in the literature on a number of hydrated lipids possessing the phosphatidylcholine headgroup. As in DPPC, the [Formula Presented] phase in all of these systems is found to be characterized by two-dimensional ordering of the lipid molecules on a superlattice of the hydrocarbon chain lattice. We also discuss the influence of headgroup interactions on the structure of this phase.
UR - http://www.scopus.com/inward/record.url?scp=0001564295&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.54.4446
DO - 10.1103/PhysRevE.54.4446
M3 - Article
AN - SCOPUS:0001564295
SN - 1063-651X
VL - 54
SP - 4446
EP - 4449
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 4
ER -