화학공학소재연구정보센터
Journal of Applied Polymer Science, Vol.90, No.14, 3876-3881, 2003
Iodine doping of poly(3-undecylbithiophene) and its composites with polystyrene using supercritical carbon dioxide
Partially doped conductive poly(3-undecylbithiophene) and its composites with porous, crosslinked polystyrene were chemically doped with iodine using supercritical carbon dioxide to transport iodine to the conductive regions of the composite. The amount of iodine incorporated into the composite increased from 9.3 wt % at ambient conditions without carbon dioxide to 21.4 wt % in the presence of supercritical carbon dioxide. The conductivity of the composite increased by up to two orders of magnitude with iodine doping using supercritical carbon dioxide. The highest conductivity was obtained in samples treated at moderate temperatures and pressures (313 K and 20.7 MPa). (C) 2003 Wiley Periodicals, Inc.