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Freezing Capture of Polymorphic Aggregates of Bolaamphiphilic L ‐Valine‐Based Molecular Hydrogelators
Author(s) -
Nebot Vicent J.,
DíazOltra Santiago,
Smets Johan,
Fernández Prieto Susana,
Miravet Juan F.,
Escuder Beatriu
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201400346
Subject(s) - kinetics , chemistry , valine , self healing hydrogels , chemical engineering , polymorphism (computer science) , flexibility (engineering) , polymer chemistry , amino acid , biochemistry , physics , statistics , mathematics , quantum mechanics , genotype , engineering , gene
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.