Conducting poly(9-alkylfluorene), poly(9,9-dialkylfluorene) and poly(1,10-bis(9'-alkylfluorenyl)alkane) have been prepared utilizing FeCl3 as a catalyst. Poly(9-alkylfluorene) and poly(9,9-dialkylfluorene) have been found to be fusible. The melting point decreases with increasing alkyl chain length then it again increase. Unlike in poly(3-alkylthiophene), electrical conductivity and band gap energy do not change remarkably at the melting point. Electrical and optical properties also exhibit drastic changes upon doping. Electronic band scheme has been also evaluated from cyclic voltammograms. Poly(1,10-bis(9'-alkylfluorenyl)alkane) have demonstrated typical characteristics as polymer gels such as drastic changes of volume and absorption spectrum upon changing solvent composition and temperature.