INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina.
Anal Chim Acta. 2013 Dec 17;805:19-35. doi: 10.1016/j.aca.2013.10.039. Epub 2013 Oct 29.
This review present a critical comparison of the electrochemical behavior and analytical performance of glassy carbon electrodes (GCE) modified with carbon nanotubes (CNTs) dispersed in different polymers: polyethylenimine (PEI), PEI functionalized with dopamine (PEI-Do), polyhistidine (Polyhis), polylysine (Polylys), glucose oxidase (GOx) and double stranded calf-thymus DNA (dsDNA). The comparison is focused on the analysis of the influence of the sonication time, solvent, polymer/CNT ratio, and nature of the polymer on the efficiency of the dispersions and on the electrochemical behavior of the resulting modified electrodes. The results allow to conclude that an adequate selection of the polymers makes possible not only an efficient dispersion of CNTs but also, and even more important, the building of successful analytical platforms for the detection of different bioanalytes like NADH, glucose, DNA and dopamine.
本文对不同聚合物分散碳纳米管修饰的玻碳电极（GCE）的电化学行为和分析性能进行了批判性比较：聚乙烯亚胺（PEI）、多巴胺功能化的聚乙烯亚胺（PEI-Do）、组氨酸聚合物（Polyhis）、赖氨酸聚合物（Polylys）、葡萄糖氧化酶（GOx）和双链小牛胸腺 DNA（dsDNA）。比较重点在于分析超声时间、溶剂、聚合物/CNT 比以及聚合物性质对分散体效率以及所得修饰电极电化学行为的影响。结果表明，对聚合物的适当选择不仅可以实现 CNT 的有效分散，而且更重要的是，还可以为检测不同生物分析物（如 NADH、葡萄糖、DNA 和多巴胺）构建成功的分析平台。
