Table 2

Comparison of ionic current rectification factor in K3 Fe(CN)6 solution
Concentration of K3Fe (CN)6 Rectification factor
(mM) As-made Single-step electrooxidation of amine Electrochemical grafting of diazonium and coupling of dye Chemical grafting of diazonium and coupling of dye
10 3.9 ± 0.8 14.4 ± 0.6 2.9 ± 0.2 4.0 ± 0.4
50 4.4 ± 0.9 9.8 ± 0.3 2.9 ± 0.2 3.3 ± 0.07
100 3.4 ± 0.1 8.0 ± 0.4 3.2 ± 0.3 3.6 ± 0.2

Rectification factor was calculated by the ratio of ionic transport current at ±0.6-V bias. Linear scan was from −0.60 to + 0.60 V with the scan rate at 50 mV/s.

Zhan et al.

Zhan et al. Nanoscale Research Letters 2013 8:279   doi:10.1186/1556-276X-8-279

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