| 초록 |
Phosphate ions and their derivatives carry out signal transmission and energy storage in the biological systems. Polydiacetylene(PDA) is a conjugated polymer that formed by 254nm UV irradiation. PDA can be functionalized with various ligands and the polymer displays a distinct blue-to-red color change upon stimulation, making it an advantageous material for detecting biological materials. Pyridine has been reported to form complexes with various metal ions. Cd ion forms a complex with pyridine and has a high affinity towards dihydrogen phosphate ion. In this study, we prepared a Cd-containing PDA and investigated the possibility of detection of H2PO4-. Interestingly, the PDA functionalized with Cd displayed a color change in the presence of dihydrogen phosphate. Other anions were not effective for the colorimetric change. Extraction of the Cd ion by dihydrogen phosphate is believed to cause structural damage to the polymer, resulting in the color change of the polymer. |
