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- W2003017725 abstract "Abstract Voltammetric and electrochemical impedance spectroscopic (EIS) studies of generation one poly(propylene imine) (G1 PPI) dendrimer as an electroactive and catalytic nanomaterials both in solution and as an electrode modifier based on a simple one step electrodeposition method is presented. The G1 PPI exhibited a reversible one electron redox behaviour at E0′ ca 210 mV in phosphate buffer pH 7.2 with diffusion coefficient and Warburg coefficient of 7.5 × 10−10 cm2 s−1 and 8.87 × 10−4 Ω s−1/2 respectively. Cyclic voltammetric electrodeposition of a monolayer of G1 PPI on glassy carbon electrode was carried out between −100 mV and 1100 mV for 10 cycles. The nanoelectrode was electroactive in PBS at E0′ ca 220 mV. Kinetic profiles such as time constant (4.64 × 10−5 s rad−1), exchange current (1.55 × 10−4 A) and heterogeneous rate constant (4.52 × 10−3 cm s−1) obtained from EIS showed that the dendrimer layer catalysed the redox reaction of Fe2+/3+ in [Fe(CN)6]3−/4− redox probe." @default.
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- W2003017725 date "2010-01-01" @default.
- W2003017725 modified "2023-09-27" @default.
- W2003017725 title "Electrochemical impedimetry of electrodeposited poly(propylene imine) dendrimer monolayer" @default.
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- W2003017725 doi "https://doi.org/10.1016/j.jelechem.2009.10.032" @default.
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