Freezing Capture of Polymorphic Aggregates of Bolaamphiphilic L‐Valine‐Based Molecular Hydrogelators |
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| Authors: | Dr Vicent J Nebot Dr Santiago Díaz‐Oltra Dr Johan Smets Susana Fernández?Prieto Dr Juan F Miravet Dr Beatriu Escuder |
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| Affiliation: | 1. Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071 Castelló (Spain), Fax: (+34)?964728214;2. Procter & Gamble, 1853 Strombeek‐Bever (Belgium) |
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| Abstract: | Nanostructured xerogels have been prepared by the freeze‐drying of hydrogels and aggregates formed by bolaamphiphilic L ‐valine derivatives after aging under different environmental conditions. A wide variety of shapes and sizes has been achieved by a simple methodology. These nanostructures have been studied by SEM and WAXD and a dramatic influence of structural flexibility on the kinetics of aggregation has been observed. Such flexibility and a modulation of the hydrophobic effect have shown a profound influence in the packing of these compounds and revealed a high degree of polymorphism. |
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| Keywords: | hydrogels nanostructures polymorphism self‐assembly supramolecular |
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