Microscopy and electroanalysis of a first generation copperpoly (propyleneimine) metallodendrimer system

SOURCE: International Journal of Electrochemical Science
OUTPUT TYPE: Journal Article
PUBLICATION YEAR: 2015
TITLE AUTHOR(S): C.Rassie, J.Van Wyk, L.Wilson, H.R.Makelane, U.Feleni, U.Sidwaba, S.Mapolie, P.Baker, E.Iwuoha
KEYWORDS: COPPER, ELECTROCHEMISTRY, METALLODENDRIMER
DEPARTMENT: Centre for Science, Technology and Innovation Indicators (CESTII)
Print: HSRC Library: shelf number 8570
HANDLE: 20.500.11910/2017
URI: http://hdl.handle.net/20.500.11910/2017

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Abstract

A copper-poly(propyleneimine) (CuPPI) metallodendrimer was physically adsorbed onto the surface of a gold electrode to form an Au|CuPPI electrode system, which was electrochemically characterized by cyclic and square wave voltammetric techniques. The surface morphology of the poly(propyleneimine) dendrimer (PPI) and its copper-functionalized derivative, i.e. CuPPI, were compared using atomic force microscopy (AFM). High resolution transmission electron microscopy (HR-TEM) and high resolution scanning electron microscopy (HR-SEM) data showed that CuPPI has a layered crystalline structure. The metallodendrimer would be a suitable platform for electrochemical biosensing applications since the diffusion coefficient is only very slightly affected by oxygen.

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