| 초록 |
Caffeine (CAF), an alkaloid compound present in beverages including coffee, energy and soft drinks, has physiological effects such as stimulation of the central nervous system. However, the excessive usage of CAF has adverse effects such as cardiovascular disease and trembling. In this study, redox active Prussian blue encapsulated chitosan grafted polyaniline (PB-CHI-PANI) is synthesized via oxidative-radical polymerization using ammonium persulfate in acidic medium. The PB-CHI-PANI is duly characterized by FT-IR, SEM, XRD and TGA. A conductive ink is prepared by dispersing PB-CHI-PANI in N-Methyl-2-pyrrlidone and drop casted on glassy carbon electrode (GCE). Then, electrochemical analysis such as CV, EIS and DPV is conducted on the obtained thin film at GCE. Our results show that PB-CHI-PANI/GCE exhibits outstanding sensitivity and selectivity towards CAF detection. |
