Cyclodextrin-Based Self-Assembled Nanotubes at the Water/Air Interface

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• 作者：Jorge Hern&aacute ; ndez-Pascacio ; Cristina Garza ; Xavier Banquy ; Norma Dí ; az-Vergara ; Alfredo Amigo ; Salvador Ramos ; Rolando Castillo ; Miguel Costas ; &Aacute ; ngel Piñ ; eiro
• 刊名：Journal of Physical Chemistry B
• 出版年：2007
• 出版时间：November 8, 2007
• 年：2007
• 卷：111
• 期：44
• 页码：12625 - 12630
• 全文大小：1057K
• 年卷期：v.111,no.44(November 8, 2007)
• ISSN：1520-5207

文摘

Native -cyclodextrin (-CD) is found to spontaneously form films at aqueous solution/air interfaces. Shape-response measurements to volume perturbations on drops hanging from a capillary indicate that temperatureand sodium dodecyl sulfate (SDS) concentration strongly modify the viscoelastic properties of such films.By using isothermal titration calorimetry (ITC), Brewster angle microscopy (BAM), atomic force microscopy(AFM), and molecular dynamics (MD) simulations, it is shown that the films consist of self-assemblednanotubes whose building blocks are cyclodextrin dimers (-CD₂) and -CD₂-SDS₁ complexes.