申请人:Miles Inc.
公开号:US04886625A1
公开(公告)日:1989-12-12
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.
通过新型单体,例如3-取代的2,5-二(2-噻吩基)吡咯,可以生产出具有电导性的同聚物和/或共聚物和/或三聚物。这些聚合物表现出意外的高稳定性和电导率,并且可以进行功能化,例如用酶(如葡萄糖氧化酶)或离子特异性结合位点(如冠醚)或抗原,而不会对聚合物的电导性产生不利影响。功能化的导电聚合物可以用于诊断设备中,以确定液体介质中特定分析物的存在和浓度。例如,通过测量酶葡萄糖氧化酶的振动激发引起的聚合物电导变化,可以确定葡萄糖的存在和浓度,或者通过测量酶/底物反应的次生效应(例如在葡萄糖-葡萄糖氧化酶反应期间生成的过氧化氢引起的导电聚合物电导变化)来确定葡萄糖的存在和浓度。