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Título: | Self-assembly modulation in ionic PAMAM derivatives |
Autor: | Hernández-Ainsa, Silvia CSIC ORCID; Fedeli, Elisabetta; Barberá, Joaquín CSIC ORCID; Marcos, Mercedes CSIC ORCID; Sierra, Teresa CSIC ORCID ; Serrano, José Luis CSIC ORCID | Fecha de publicación: | 2014 | Editor: | Royal Society of Chemistry (UK) | Citación: | Soft Matter 10(2): 281-289 (2014) | Resumen: | The self-assembly behaviour both in the bulk and water of a series of amphiphilic dendrimers constituted by second generation PAMAM ionically functionalized with different amounts of myristic acid is shown here. The number of acids in the dendrimer determines the liquid-crystal properties and the structural parameters of their supramolecular organization. Most of them present mesomorphism, organizing in a smectic A mesophase, with a layer spacing decreasing when increasing the number of acids. All these dendrimers form well-defined nanoobjects in water. Micelles and broken lamellae have been found for compounds with low acid contents. In contrast, dendrimers with higher fatty acid contents self-assemble forming nanospheres with a lamellar nanostructure. All compounds are able to trap the hydrophobic molecule 9,10-diphenylanthracene independent of the acid contents. Interestingly, the trapped hydrophobic molecule dominates the self-assembly trend of the dendrimers with low acid contents and thus different nanoobjects are found after the encapsulation. © 2014 The Royal Society of Chemistry. | URI: | http://hdl.handle.net/10261/120963 | DOI: | 10.1039/C3SM52393D | Identificadores: | doi: 10.1039/C3SM52393D issn: 1744-683X e-issn: 1744-6848 |
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