As part of our attempt to make semiconducting polymers from the plasma polymerized polymers, we have polymerized Furan and annealed the polymerized film. under different annealing conditions. It is noted that the current density is increased by one order when the sample is annealed in the presence of air, and in the case of vacuum annealed sample, the current density decreased in comparison with the unannealed sample. The probable reason for this difference is also discussed. Comparative study of the infrared spectra of the monomer and polymer gives some hints regarding the structure of the polymer unit. (C) 2000 John Wiley & Sons, Inc.