Title: STUDY OF ELECTROSTATIC INTERACTION BETWEEN CHARGED SURFACTANT VESICLES AND IONIC MOLECULES BY BULK AND FLUORESCENCE CORRELATION SPECTROSCOPY MEASUREMENTS Xiang Wang, Doctor of Philosophy, 2007 Directed By: Professor Douglas S. English Department of Chemistry and Biochemistry Phospholipid vesicles (Liposomes) for controlled release applications such as drug and gene delivery have attracte...

The aim of this work was to study intermolecular interactions in systems containing charged polyion (polyacrylate, PA(-)), charged surfactant (C(16)TA(+)) and nonionic surfactant (C(12)E(5) or C(12)E(8)). To achieve this we have created four different phase diagrams using two different so-called complex salts, C(16)TAPA(25) and C(16)TAPA(6000), both consisting of positively charged surfactant (...

Inhaled nanoparticles (NPs) must first interact with the pulmonary surfactant (PS) lining layer that covers the entire internal surface of the respiratory tract and plays an important role in surface tension reduction and host defense. Interactions with the PS film determine the subsequent clearance, retention, and translocation of the inhaled NPs and hence their potential toxicity. To date, li...

We propose a mechanism for reentrant phase separation in globular microemulsions based on the combined effects of a shape transition and attractive interactions. Long cylindrical globules can phase separate at relatively low interglobular attractions. A transformation from elongated globules to compact spherical drops alters the balance between the entropy and effective interglobule interaction...