Electrogeneration of a biotinylated poly(pyrrole–ruthenium(<scp>ii</scp>)) film for the construction of photoelectrochemical immunosensor
作者:Naoufel Haddour、Serge Cosnier、Chantal Gondran
DOI:10.1039/b410727f
日期:——
A biotinylated photosensitive polymer was electrogenerated from on a ruthenium complex bearing biotin and pyrrole groups; the resulting polypyrrolic film allowed the bioaffine immobilisation of avidin and biotinylated cholera toxin and the photoelectrochemical detection of the corresponding antibody.
biotinylated polypyrrole film. The latter was generated by electro-oxidation of a biotinylated tris(bipyridyl) ruthenium(II) complex bearing pyrrole groups. The photoexcitation of this modified electrode potentiostated at 0.5 V vs SCE, in the presence of an oxidative quencher, pentaaminechloro cobalt(III) chloride (15 mM), led to a cathodic photocurrent. As a result of the affinity interactions, a
我们在此展示了一种新开发的光电化学免疫传感器,用于通过使用光敏生物素化聚吡咯膜测定抗霍乱毒素抗体。后者是通过带有吡咯基团的生物素化三(联吡啶)钌(II)配合物的电氧化产生的。在氧化猝灭剂五胺氯氯化钴 (III) (15 mM) 存在下,这种改性电极的光激发电位为 0.5 V vs SCE,导致阴极光电流。由于亲和相互作用,一层生物素化的霍乱毒素通过抗生物素蛋白桥牢固地结合到功能化的聚吡咯膜上。由此产生的修饰电极被测试为检测相应抗体从 0 到 200 microg mL(-)(1) 的免疫传感器。