| Summary: | 碩士 === 國立臺灣大學 === 高分子科學與工程學研究所 === 95 === Characterization and processing of the conducting polymer have been limited by the inherent insolubility of these compounds. The main target of this study is the synthesis of organic soluble conducting polymer. In this study the studied conducting polymer are separated into three systems：(1) Polydihexyloxythiophene (PDHOT) which is soluble in organic solvents. (2) The water soluble poly(3-thienyl) ethoxybutanesulfonate (PTEBS). (3)The organic soluble copolymers incorporating DHOT and TEBSTBA.
In series (1), the conducting polymer which is soluble in organic solvents is obtained by incorporation of relatively long and flexible side chains. The optimum condition of the system is PDHOT dissolved in dichloromethane while fixing the ratio of dopant to monomer at 0.5. In this condition, the conductivity of PDHOT film is 1.58*10-3 S/cm. In series (2), the PTEBS with sulfonate group in the side chain was soluble in water. PTEBS is doped by itself and the conductivity of it is 2.64*10-3 S/cm. In series (3), the conductivity of the copolymers is getting lower and lower as the ratio of the two monomers is getting close to 50:50. The self-doping copolymer is obtained by exposing copolymers to acid condition which lead to the formation of the acid form of the polymer.
The polymers were analyzed by Fourier transform infrared spectroscopy, Differential scanning calorimetry, Thermogravimetric analysis, UV-Visible spectroscopy, a four-point probe device to correlate the characterization, thermal properties, doping state, and conductivity.
|
|---|
