Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 27, Issue 11, Pages 2279-2283Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.200990382
Keywords
supramolecular hydrogel; low molecular weight gelator; hydrogen bond
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Funding
- National Natural Science Foundation of China [20574041, 20874055]
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In this paper, four gelators (defined as G1-G4) were prepared from 3,3',4.4'-benzophenonetetracarboxylic acid (BPTA) and para-hydroxylpyridine or meta-hydroxylpyridine at molar ratios 1 : 2 and 1 : 4 respectively. and characterized by H-1 NMR, IR, UV-Vis spectra and elemental analysis Due to the amphiphilic features. all the gelators were able to gel water via cooling their aqueous solution under different stimulations. The structure of the assembling fibers and the macroscopic properties of the gels were investigated by multiple techniques. The results indicated that the minimum gelator concentration (MGC) increased by the order of G1, G2, G3 and G4. while the gel-to-sol dissociation temperature (T-gel) decreased by the same order. which were explained from the assembling structures of the gels.
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