Thixotropic and Injectable Nature of Supramolecular Hydrogels Derived from N,N'-Dibenzoyl-L-cystine and the Effects of Esterification

ISSN: 2210-6820 (Online)
ISSN: 2210-6812 (Print)


Volume 4, 2 Issues, 2014


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Nanoscience & Nanotechnology-Asia

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Editor-in-Chief:
Sanjeeb K. Sahoo
Institute of Life Sciences
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Thixotropic and Injectable Nature of Supramolecular Hydrogels Derived from N,N'-Dibenzoyl-L-cystine and the Effects of Esterification

Author(s): Eva-Maria Schon, Jurgen Bachl and David Díaz Díaz


Abstract

The thixotropic and injectable properties of physical hydrogels derived from N,N'-dibenzoyl-L-cystine (1) and its dimethyl ester (2) at room temperature (RT) are described. The characterization of the materials was carried out by oscillatory rheological measurements, including thixotropy-loop tests, and field emission scanning electron microscopy (FE-SEM). Moreover, the effects of a) gelator concentration and b) added DMSO on the gel stability are also discussed. Interestingly, comparative studies revealed, among other effects, that esterification of DBC has a positive effect on both the critical gelation concentration (CGC(1) = 4.5 mM; CGC(2) = 2.0 mM) and the thermal stability of the gels (Tgel(1) = 65 ºC; Tgel(2) = 78 ºC), whereas the thixotropic-response was significantly hampered.


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Article Details

Volume: 4
First Page: 1
Page Count: 1
DOI: 10.2174/2210681204666140716183336
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