申请人:MILES INC.
公开号:EP0314009A2
公开(公告)日:1989-05-03
Electrically conducting homo- and/or copolymers and/or tripolymers can be produced from novel monomers, such as a 3-substituted 2,5-di(2-thienyl)pyrrole. The polymers exhibit unexpectedly high stability and conductivities, and can be functionalized, such as with an enzyme, like glucose oxidase, or an ion-specific binding site, like a crown ether, or an antigen, without adversely affecting the conductivity of the polymer. The functionalized, conducting polymer can be used in a diagnostic device to determine the presence and concentration of a specific analyte in a liquid medium. For example, the presence and concentration of glucose is determined by measuring the conductivity change in the polymer caused by the vibrational excitation induced in the enzyme, glucose oxidase, from its reaction with the glucose and/or by measuring a secondary effect of the enzyme/substrate reaction, such as the change in the conductivity of the conducting polymer caused by the generation of hydrogen peroxide during the glucose-glucose oxidase reaction.
导电均聚物和/或共聚物和/或三聚物可由新型单体(如 3-取代的 2,5-二(2-噻吩基)吡咯)制成。这种聚合物具有出乎意料的高稳定性和导电性,并且可以进行官能化,例如与葡萄糖氧化酶等酶或冠醚等离子特异性结合位点或抗原结合,而不会对聚合物的导电性产生不利影响。功能化导电聚合物可用于诊断设备,以确定液体介质中是否存在特定分析物及其浓度。例如,通过测量葡萄糖氧化酶与葡萄糖反应引起的振动激发所导致的聚合物电导率变化,和/或通过测量酶/底物反应的次级效应,如葡萄糖-葡萄糖氧化酶反应过程中产生的过氧化氢所导致的导电聚合物电导率变化,来确定葡萄糖的存在和浓度。