The surface microstructures and properties of PPY film and the multilayer were investigated by FTIR reflect spectroscopy, UV and cyclic volvoltammogram.

• 紫外光谱和循环伏安测试结果证实,表面固定了乳酸脱氢酶的聚吡咯多层薄膜具有生物催化活性和电化学活性,有望作为丙酮酸生物传感器。