Surface Properties of a Series of Amphiphilic Dendrimers with Short Hydrophobic Chains

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• 作者：Jirun Sun ; Muruganathan Ramanathan ; Derek Dorman ; George R. Newkome ; Charles N. Moorefield ; Paul S. Russo
• 刊名：Langmuir
• 出版年：2008
• 出版时间：March 4, 2008
• 年：2008
• 卷：24
• 期：5
• 页码：1858 - 1862
• 全文大小：332K
• 年卷期：v.24,no.5(March 4, 2008)
• ISSN：1520-5827

文摘

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 surfactantcharacter 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 structuresexisted atop the spread layers. Large structures were also found in solutions of [9]-6.