Siloxane-based polymer was synthesized through hydrosilylation of the 1,3,5,7-tetramethylcyclotetrasiloxane (TMCS) and 1,3-divinyltetramethylsiloxane (DTMS). Controlling the hydrosilylation reaction by varying the feeding ratio with the total monomer concentration, chemically-soluble siloxane-based polymer was obtained, which allowed film preparation as well as further incorporation of functional groups through the hydrosilylation reaction. The incorporation of 9-vinylanthracene was succesfully carried out by reacting Si-H groups of the TMCS-DTMS polymer with the vinyl-terminated anthracene derivative. Structural and thermal properties of the polymer were evaluated using NMR, GPC, FT-IR and flourecence spectroscopy.