Foster CW1, Brownson DA1, Ruas de Souza AP2, Bernalte E3, Iniesta J4, Bertotti M2, Banks CE1.
Analyst. 2016 Jun 20;141(13):4055-64. doi: 10.1039/c6an00402d.Inspired by recent reports concerning the utilisation of hand drawn pencil macroelectrodes (PDEs), we report the fabrication, characterisation (physicochemical and electrochemical) and implementation (electrochemical sensing) of various PDEs drawn upon a flexible polyester substrate. Electrochemical characterisation reveals that there are no quantifiable electrochemical responses upon utilising these PDEs with an electroactive analyte that requires an electrochemical oxidation step first, therefore the PDEs have been examined towards the electroactive redox probes hexaammineruthenium(iii) chloride, potassium ferricyanide and ammonium iron(ii) sulfate. Read More