Title

Subgel Characterization and Effects of Ionson Phospholipid Bilayers

Authors

Erik Anderson

Document Type

Article

Publication Date

2002

Abstract

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.

Advisor

P. K. Dea

Department

chem

Support

National Science Foundation-Research Experience for Undergraduates Fellowship

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