| 초록 |
Anion-coordination chemistry have played important roles in biology and industrial processes, in addition to the environment issues. Thiourea has been studied for the tailored anion receptors via hydrogen bonding interactions. In this study, we prepared thiourea-based network gels using a facile one-step synthesis, and tested for sensing anion species. Gelation time was correlated with the conversion of the thiourea reaction measured by 1H-NMR, which was supported by rheometer data. In addition, the molecular interaction between anions and the thiourea moiety was measured by ¬UV-Vis titration, DLS and FT-IR measurement. Finally, we found that the thioureas have directional hydrogen bonding that can be given both high affinity and selectivity such as cyanide and fluoride. Thiourea-based network gels showed visually considerable color and size changes depending on guest anion binding, and such properties were utilized as the anion-selective sensor and the anion-promoting actuator. |
