Synthesis, characterization and use of Ru-Fc intercalation complex as an electrochemical label for the detection of pathogen-DNA (original) (raw)

Journal of Physics: Conference Series, 2013

Abstract

This report describes the synthesis of [Ru(Fe-Phen)2dppz](PF6)2 (Ru-Fe complex) for a label-free approach to detect DNA hybridization. The Ru-Fe complex showed oxidation signals at +608 mV and +1192 mV corresponding to the RuII/III and FeII/III centers, respectively. We used the Ru-Fe complex and the Ferrocene covalently attached to the target to monitor the hybridization event of a 70-mer oligo immobilized in 10.3KD NHS-PS-NHS. The lowest target detectable concentration for the DNA fragment was around 0.4 μM.

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