| 초록 |
A new series of low molar mass organogelator containing 2-(2’-hydroxyphenyl)benzoxazole (HPB) group was synthesized by the reaction with HPB and alkyl isocyanate in THF at room temperature. Translucent and opaque organogels were formed in carbon tetrachloride and in cyclohexane by heating-cooling method. The self-assembled structure was confirmed with field emission-scanning electron microscope (FE-SEM) and transmission electron microscope (TEM), and the aggregation structure was determined by small angle X-ray scattering (SAXS). The sensing properties of organogel for anionic species were monitored by UV/vis and fluorescence spectroscopy. When the CCl4-gel was exposed to anionic species, gelation was not observed and the solution showed color change from colorless to yellow. Furthermore, the strong and green fluorescence of gel state was quenched dramatically. |
