Synthesis and Electronical Property of Antimony-Substituted Polysilanes and Iron-Substituted Polysilanes

Novel polysilanes, antimony-substituted polysilanes (APS) and iron-substituted polysilanes (IPS), were synthesized and characterized in this paper. To prepare these new metal-containing polymers, high reactive polymers, polymethylsilane (PMS) and polychloromethylsilane (PCMS) were used as mother polymers. The APS was synthesized directly by the reaction of PMS with SbCl3, while IPS was obtained from the reaction of PCMS with Na2Fe(CO)4 in the solvent of n-hexane. The polymers were characterized by elemental analysis, FT-IR, 1 H-NMR, 29 Si CP/MAS NMR, GPC, and UV. The number average molecular weights of these two polymers are between 1400 and 1600. These polymers show good semiconductive properties, whose intrinsic conductivities are in the range of 10 -8 ~10 -7 S/cm, and can be increased to10 -5 S/cm after being doped with iodine.