A conventional three electrode configuration was used for

Platinum microbands; Surface modification; Diazonium salt; Electrografting; Click reaction
1. Introduction
2. Materials and Methods
2.1. Materials
l-Ascorbic LDE225
 (99%), 4-azidoaniline hydrochloride (97%), copper (II) sulfate, ethynylferrocene (97%), hexaammineruthenium (III) chloride (98%), potassium chloride, potassium hexacyanoferrate (II), potassium hexafluorophosphate (99.5%, KPF6), sodium nitrite (NaNO2), tetrabutylammonium tetrafluoroborate (99%, Bu4NBF4) and tetrafluoroboric acid solution (48 wt.% image in H2O, HBF4) were purchased from Sigma-Aldrich. Silver (99.99%, 0.5 mm diameter) and platinum (99.99%, 1.0 mm diameter) wires were purchased from Goodfellow. Acetonitrile (ACN), diethyl ether and ethanol absolute were purchased from VWR. All the solutions were prepared using 18 M? Milli-Q water.
A 10:1 mixture of polymer-to-curing agent ratio was employed to fabricate polydimethylsiloxane (PDMS, RTV-615, Momentive Performance Materials).
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