Structural and morphological studies of the dipeptide based L-Pro-L-Val organocatalytic gels and their rheological behaviour
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comunitat-uji-handle2:10234/7053
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Title
Structural and morphological studies of the dipeptide based L-Pro-L-Val organocatalytic gels and their rheological behaviourAuthor (s)
Date
2012-07Publisher
Royal Society of ChemistryType
info:eu-repo/semantics/articleSubject
Abstract
Organocatalytic gels based on the dipeptide sequence L-Pro-L-Val have been studied by two different FTIR techniques. This suggests a different arrangement of the gelator molecules in the self-assembled fibers depending ... [+]
Organocatalytic gels based on the dipeptide sequence L-Pro-L-Val have been studied by two different FTIR techniques. This suggests a different arrangement of the gelator molecules in the self-assembled fibers depending on the organic solvent employed. In acetonitrile and nitromethane the structure of the supramolecular aggregates is similar and provides similar catalytic properties (supramolecular enhancement of basicity). In contrast, the self-assembled fibers obtained in toluene clearly presented a different molecular arrangement consistent with its different catalytic behaviour (enamine-based catalysis). In addition these gels have been studied by microscopy and rheology. [-]
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Soft Matter, 2012,8Rights
@ The Royal Society of Chemistry 2012
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- QUIO_Articles [702]