申请人:Miles Inc.
公开号:US05210217A1
公开(公告)日:1993-05-11
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.
可以从新型单体(例如3-取代的2,5-二(2-噻吩基)吡咯)生产具有高稳定性和导电性的导电同聚物和/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导电性,并且可以进行功能化,例如与酶(如葡萄糖氧化酶)、离子特异性结合位点(如冠醚)或抗原等结合,而不会对聚合物的导电性产生不利影响。功能化的导电聚合物可以用于诊断设备,以确定液体介质中特定分析物的存在和浓度。例如,通过测量由酶(葡萄糖氧化酶)振动激发引起的聚合物的导电变化,从而确定葡萄糖的存在和浓度,或者通过测量酶/底物反应的次要效应,例如在葡萄糖-葡萄糖氧化酶反应期间由过氧化氢生成引起的导电聚合物的导电性变化。