- 作者: 楊思明; 簡淑華
- 作者服務機構: Department of Chemical Engineering, National Central University, Chung-Li, Taiwan 320, R.O.C.
- 中文摘要: The electron spin resonance spectra of various acid-doped polyanilines were studied. There are three significant changes in the ESR spectra upon acid-doping as the acid concentration of the doping solution is varied from pH>3 to pH<1: (1) The linewidth decreases by a factor of three. (2) The intensity increases. (3) The spin density increases by a factor of twenty. By comparing the variation of the electric conductivity with the variation of the spin density upon acid-doping, it is proposed that the polyaniline prepared by chemical oxidation consists of various oxidized and reduced units, and that the pi-electron rearrangement upon acid-doping results in highly conductive radical cations.
- 英文摘要: --
- 中文關鍵字: Polyaniline; ESR spectrum.
- 英文關鍵字: Polyaniline; ESR spectrum.