State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China.
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China.
J Colloid Interface Sci. 2022 Jul;617:454-462. doi: 10.1016/j.jcis.2022.03.029. Epub 2022 Mar 8.
Conductive polymers with good flexibility, conductivity and film-forming ability attract a lot of attention. In this work, a large-area and ordered structure poly(3,4-ethylenedioxythiophene) (PEDOT) film is fabricated at the air-water interface through interface synthesis method. The PEDOT film can be directly placed on a flexible screen-printed electrode, but also has good adhesion between them. The surface of the PEDOT film is relatively smooth, and has good electrical conductivity and flexibility. Lactate oxidase is immobilized on the surface of PEDOT film through a combination of cross-linking and adsorption method to enhance the lactate sensitive performances. The results show that the PEDOT film sensor has excellent stability and reproducibility. The PEDOT film sensor shows a good response to lactate, the working range is 0.25-40 mmol L, and the detection limit is 0.083 mmol L (S/N = 3). Moreover, the electrochemical sensor has potential application in detecting lactate in sweat of the human body.
具有良好柔韧性、导电性和成膜能力的导电聚合物引起了人们的广泛关注。在这项工作中，通过界面合成法在气-液界面制备了大面积有序结构的聚（3,4-乙二氧基噻吩）（PEDOT）薄膜。PEDOT 薄膜可以直接放置在柔性丝网印刷电极上，并且它们之间也具有良好的粘附力。PEDOT 薄膜的表面相对光滑，具有良好的导电性和柔韧性。通过交联和吸附的方法将乳酸氧化酶固定在 PEDOT 薄膜的表面，以增强乳酸的敏感性能。结果表明，PEDOT 薄膜传感器具有优异的稳定性和重现性。PEDOT 薄膜传感器对乳酸有良好的响应，工作范围为 0.25-40 mmol·L，检测限为 0.083 mmol·L（S/N = 3）。此外，电化学传感器在检测人体汗液中的乳酸方面具有潜在的应用。
