Supramolecular Self-Assembled Arrangements of Maltose Glyconanoparticles

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• 作者：Martina Fuss ; Mó ; nica Luna ; David Alc&aacute ; ntara ; Jesú ; s M. de la Fuente ; Soledad Penadé ; s ; Fernando Briones
• 刊名：Langmuir
• 出版年：2008
• 出版时间：May 6, 2008
• 年：2008
• 卷：24
• 期：9
• 页码：5124 - 5128
• 全文大小：582K
• 年卷期：v.24,no.9(May 6, 2008)
• ISSN：1520-5827

文摘

Our group previously reported the preparation of water-soluble Au-Fe_xO_y nanoparticles functionalized with amaltose neoglycoconjugate. A fraction soluble in methanol was also separated and originated a new supramolecularpolymeric aggregate. We report here the full characterization of this novel material by transmission electron microscopy(TEM), fluorescence emission, and atomic force microscopy. By means of noncontact dynamic atomic force microscopy,we have been able to obtain information about the organization of the organic components of the polymers, whicheluded TEM analysis. We have observed that polymers packed in units about 65 nm in length and 40 nm in widthon Au surfaces. The nanoparticles seem to be encapsulated by the organic material. We propose interactions betweenthe sugar residues and the amphiphilic character of the maltose neoglycoconjugate (with a lipophilic undecane spacer)as responsible for the origin of these amazing supramolecular arrangements.