Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 109501
Title N-Cholyl Amino Acid Alkyl Esters - A Novel Class of Organogelators
Author(s) Willemen, H.M.; Vermonden, T.; Marcelis, A.T.M.; Sudhölter, E.J.R.
Source European Journal of Organic Chemistry 12 (2001). - ISSN 1434-193X - p. 2329 - 2335.
Department(s) Organic Chemistry
Publication type Refereed Article in a scientific journal
Publication year 2001
Abstract Several N-cholyl amino acid alkyl esters were found to act as novel, potent organogelators for aromatic solvents and cyclohexene. These novel organogelators afford stable, transparent, and thermoreversible gels. Modification of the molecular structure and IR measurements show that gelation takes place by means of a hydrogen-bonded network and involves at least the amide bond and several hydroxy groups of the cholic acid component. The chiral center of the amino acid component seems to play an important role in gelation. Although a wide variety of derivatives display gelation behavior, a small change in molecular structure can have a dramatic effect on the gelling capability. Electron microscopy reveals a fibrous structure in the gels. Differential scanning calorimetry shows several transitions in the melting behavior of the gels.
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