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Gelation of organic solvents by N -( n -tetradecylcarbamoyl)- l -amino acids.
- Source :
-
Supramolecular Chemistry . Jan/Feb2015, Vol. 27 Issue 1/2, p127-135. 9p. - Publication Year :
- 2015
-
Abstract
- A series ofN-(n-alkylcarbamoyl)-l-amino acid amphiphiles with different amino acid head groups were designed and synthesised. The gelation abilities of these amphiphilic molecules were studied in toluene andp-xylene solvents. The hypothesis that steric crowding at the chiral head group destroys gelation ability of the amphiphile was examined. Indeed, besidel-alanine-based amphiphile, onlyl-serine andl-aspartic acid derivatives were found to gelate the organic liquids efficiently in the presence of a small quantity of water. The gels were characterised by a number of methods, including FT-IR, NMR and X-ray diffraction spectroscopy, scanning electron microscopy (SEM) and rheology. The SEM micrographs revealed three-dimensional networks of ribbon-like aggregates. The organogels were observed to be thermo-reversible in nature and have sufficient mechanical strength. The gels have gel-to-sol transition temperatures above the physiological temperature (310 K). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10610278
- Volume :
- 27
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Supramolecular Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 99573045
- Full Text :
- https://doi.org/10.1080/10610278.2014.914628