Subgel Characterization and Effects of Ionson Phospholipid Bilayers
Fluorescence spectroscopy and phosphorus-31 nuclear magnetic resonance (31P NMR) were used to study the phase dynamics of a 16-carbon acyl chain phospholipid, dipalmitoylphosphatidylcholine (DPPC), with and without the presence of ions. 31P NMR studies show that increasing ZnSO4 concentrations up to 25 mol% is accompanied by an increase in area of an isotropic peak near 0 ppm indicating the presence of free rotation of small unilamellar vesicles in the liquid-crystalline phase. Fluorescence emission data indicate that increasing the ZnSO4 concentration causes increasingly greater changes in relative fluorescence intensity near the gel to liquid-crystalline transition temperature of DPPC.
Anderson, Erik, "Subgel Characterization and Effects of Ionson Phospholipid Bilayers" (2002). URC Student Scholarship.
P. K. Dea
National Science Foundation-Research Experience for Undergraduates Fellowship