| Summary: | 碩士 === 國立中山大學 === 化學系研究所 === 102 === Poly(1,4-dioxo-1,4-dihydronaphthalen-2-yl-acrylate) (PDDHNA) and its polymer brushes have been successfully synthesized by atom transfer radical polymerization (ATRP). Their electrochemical properties are also studied. In the study of PDDHNA, the structure of PDDHNA is characterized by nuclear magnetic resonance (NMR) spectroscopy and infrared (IR) spectroscopy. The cyclic voltammetry (CV) of PDDHNA/carbon composite electrode in aqueous sodium chloride electrolytes with different pH values are studied, which indicates that the redox signals increases in increasing pH value of the electrolytes. Besides, there are two redox couples at a pH of 11.8. In the study of polymer brushes, PDDHNA are grafted on ITO/glass and Au/Si substrates via surface initiated ATRP to form PDDHNA brush electrodes. The chemical compositions of the polymer brush electrodes are characterized by IR and electron spectroscopy for chemical analysis (ESCA). The contact angle measurement and atomic force microscopy (AFM) confirm that the PDDHNA brushes are grafted on the substrates. Furthermore, the CV results show that the intensity of signals of the polymer brush electrodes increases as the pH value increases. However, the CV results also indicate that the PDDHNA/C and the polymer brush electrodes are quasireversible.
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