Surface properties of a series of amphiphilic dendrimers with short hydrophobic chains.
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.
Sun
Jirun
J
Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
Ramanathan
Muruganathan
M
Dorman
Derek
D
Newkome
George R
GR
Moorefield
Charles N
CN
Russo
Paul S
PS
D000838:Anions; D002412:Cations; D050091:Dendrimers / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D008823:Micelles; D015394:Molecular Structure; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*
D000838:Anions; D002412:Cations; D050091:Dendrimers; D008823:Micelles; D013501:Surface-Active Agents