Effects of local electric fields on the redox free energy of single stranded DNA

Influence of external electric field as well as base substitution effects on the reduction/oxidation free energies of single stranded DNA suggest that base sequencing via measuring redox properties might be feasible under the conditions that (i) a difference of ～ 230 kJ mol(-1) in the oxidation potentials is enough to discriminate between nucleobases conductance signals and (ii) the strand is long enough to reduce end effects.