Ammonia plasma technique was used for the surface modification of polypyrrole(PPY) film by exposing it to ammonia plasma.

• 采用氨等离子体表面改性聚吡咯,使其表面具有活性氨基,并成功地将具有生物活性的乳酸脱氢酶共价连接在改性聚吡咯表面。