Abstract: Three aromatic carboxylic acids, DCn(n=14, 16,18), were synthesized, and their gelation behaviors with ethanediamine (EDA) were tes-ted in different solvents. The gelation tests revealed that DCn+EDA(1∶1) could form two-component supramolecular gels in some solvents with high polarity(H2O,DMF,DMSO). The microstructures of two-component gels were obtained via SEM, and FT-IR spectroscopy studies showed that the carboxylate formed by DCn and EDA gelated the solvents. X-ray diffraction (XRD) analysis revealed that in two-component gels, DC16+EDA(1∶1) took a hexagonal packing mode. On the basis of the results of IR and XRD analysis, a possible multi-stage self-assembly process for the two-component gels was proposed. The rheological studies showed that DC18+EDA/DMF gel had a good tolerance to external forces and possessed a reversible thixotropic property.
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