Comment on: X-ray diffraction study of the effects of pressure on bilayer to nonbilayer lipid membrane phase transitions

Journal Article · Sun Jan 15 04:00:00 EST 1989 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.456139· OSTI ID:6597364

Shyamsunder, E; Botos, P; Gruner, S M

X-ray diffraction data of aqueous dispersions of dioleoylphosphatidylethanolamine (DOPE) have been obtained as a function of pressure and temperature. The well-known lamellar (L/sub ..cap alpha../) to inverted hexagonal (H/sub II/) thermotropic phase transition that occurs in DOPE at about 6 /sup 0/C at ambient pressure can be reversed at 20 /sup 0/C when the pressure is increased from 1 to 500 bar. X-ray data in which the temperature is varied at fixed pressures shows that the increase in dP/dT/sub B//sub H/ is about 20 bar/K.

• Research Organization: Physics Department, Princeton University, Princeton, New Jersey 08544
• OSTI ID: 6597364
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 90:2; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AQUEOUS SOLUTIONS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
DISPERSIONS
ESTERS
FLUIDS
HIGH PRESSURE
LAYERS
LIPIDS
LIQUID CRYSTALS
LIQUIDS
LOW PRESSURE
MEDIUM PRESSURE
MEMBRANES
MIXTURES
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHOLIPIDS
PRESSURE EFFECTS
SCATTERING
SOLUTIONS
X-RAY DIFFRACTION