Abstract: A novel conjugated poly-4-hydroxyl-styrylpyridine was synthesized under the catalysis of horseradish peroxidase. The phenyl ring of 4-hydroxyl -styrylpyridine was polymerized directly in the enzyme catalyzing reaction. The fluorescent spectra of the mo nomer and the polymer indicate that poly-4-hydroxyl-styrylpyridine has a good photoluminescence character and the polymer has a bigger conjugated system and r igidity than the monomer.

Key words: horseradish peroxidase, poly-4-hydroxyl-styrylpyridine, fluorescent sp ectra