Web Release Date: January 19,
Surface Properties of a Series of Amphiphilic Dendrimers with Short Hydrophobic Chains
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Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, and Departments of Chemistry and Polymer Science, The University of Akron, Akron, Ohio 44325-4717
Received July 16, 2007
Abstract:
A series of tree-shaped, amphiphilic dendrimers was synthesized. The products belong to the family of one-directional arborols of the form ([9]-n), where the notation signifies that each molecule has nine hydroxyl groups ([9]-) as the hydrophilic head and an alkyl chain as the hydrophobic moiety (n = 6, 8, or 10 carbon atoms). The surfactant character changes dramatically as the number of methylene groups increases. The critical micelle concentration of [9]-6 was determined, and pressure-area isotherms of the less soluble [9]-8 and [9]-10 were obtained. Large structures existed atop the spread layers. Large structures were also found in solutions of [9]-6.
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