Abstract
A diacetylenic-acid arginine salt gelated water. The supramolecular structure and optical properties of the resultant hydrogel were examined by optical microscopy, electron microscopy, X-ray diffraction and ultraviolet (UV)-absorption and circular dichroism (CD) spectroscopies. Microscopic images showed that 10, 12-docosadiynedioic acid arginine salt formed a fibrous structure. X-ray diffraction and nuclear magnetic resonance measurements indicated guanidinium–carboxylate interaction. Upon UV irradiation, the gel polymerized to diacetylene oligomers, with a concomitant color change from white to orange. After the removal of arginine, CD spectra indicated that the diacetylene oligomers maintained chirality. A diacetylenic-acid arginine salt gelated water. The properties of the supramolecular hydrogel were examined by optical microscopy, electron microscopy, X-ray diffraction and ultraviolet (UV)-absorption and circular dichroism (CD) spectroscopies. Microscopic images showed that 10, 12-docosadiynedioic acid arginine salt formed a fibrous structure. Upon UV irradiation, the gel polymerized to diacetylene oligomers fibers. After the removal of arginine, CD spectra indicated that the diacetylene oligomers maintained chirality.
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