The synthsis and electrochemical study of conducting polymer/metal oxide water soluble composite

• Main Authors: Ming-hua Chung, 鍾明華
• Other Authors: C. G. Wu
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/88576449194724523031

碩士 === 國立中央大學 === 化學研究所 === 90 === Significant progress was found in the development of processable,conducting polymers. In this study, we use a simple method to synthesize the conducting polymer/metal oxide composites. Both water-soluble polythiophene and V2O5 are semiconducting materials with interesting electrochromic properties. Mixing water-soluble polythiophene with V2O5 may produce new materials with different electronic and electrochromic properties. The results may also provide the information for designing new materials with novel properties. X-ray diffraction patterns of the composites reveal that water-soluble polythiophene was intercalated into the layer gallery of V2O5 xerogel. Both TEM and SEM Micrographs suggest that water-soluble polythiophene acts as a dispersing agent for V2O5. SIMS data show that the mole ratios of V, S and C are similar through the who composite film, indicating that water-soluble polythiophene uniformly distributed in V2O5. Electrochromic studies display that the composites have various colors, depending on the mole ratio of water-soluble polythiophene and V2O5. Furthermore, the electrochemical stability of composite with high polymer content is as good as that of V2O5 and water-soluble polythiophene. When the thickness of (P3TOESH)0.96V2O5 film is about 1500Å, its ΔOD value (0.35) is higher than that of V2O5 (0.09). At the same time, its oxidizing response time is 6 seconds which is smaller than that of V2O5 (8 seconds). When the films thickness is about 2500Å, theΔOD value of (P3TOESH)0.96V2O5 is 0.48, which is higher than that of water-soluble polythiophene (0.013), and the reducing response time (4 seconds) is lower compared to the water-soluble polythiophene(7 seconds).