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Microscopy and Electroanalysis of a First Generation Copper-poly(propyleneimine) Metallodendrimer System

机译:第一代铜-聚(丙烯亚胺)金属树枝状大分子体系的显微镜和电分析

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A copper-poly(propyleneimine) (CuPPI) metallodendrimer was physically adsorbed onto the surfaceof a gold electrode to form an Au|CuPPI electrode system, which was electrochemically characterizedby cyclic and square wave voltammetric techniques. The CuPPI metallodendrimer was found to be-5 2 -1electroactive on Au electrode and has diffusion coefficient (D) values of 4.124 x 10 cm s (in the-5 2 -1 absence) and 3.29 x 10 cm s (in the presence) of oxygen in the cell solution. The surfacemorphology of the poly(propyleneimine) dendrimer (PPI) and its copper-functionalized derivative, i.e.CuPPI, were compared using atomic force microscopy (AFM). High resolution transmission electronmicroscopy (HR-TEM) and high resolution scanning electron microscopy (HR-SEM) data showed thatCuPPI has a layered crystalline structure. The metallodendrimer would be a suitable platform forelectrochemical biosensing applications since the diffusion coefficient is only very slightly affected byoxygen.
机译:将铜-聚(亚丙基亚胺)(CuPPI)金属树状聚合物物理吸附到金电极的表面上,形成Au | CuPPI电极体系,并通过循环和方波伏安技术对其进行电化学表征。发现CuPPI金属树状大分​​子在Au电极上具有5 2 -1电活性,扩散系数(D)值为4.124 x 10 cm s(在没有5 2 -1的情况下)和3.29 x 10 cm s(在存在的情况下)细胞溶液中的氧气。使用原子力显微镜(AFM)对聚(丙烯亚胺)树状大分子(PPI)及其铜官能化衍生物CuPPI的表面形态进行了比较。高分辨率透射电子显微镜(HR-TEM)和高分辨率扫描电子显微镜(HR-SEM)数据表明,CuPPI具有层状晶体结构。金属树状聚合物将是电化学生物传感应用的合适平台,因为扩散系数受氧气的影响很小。

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