Single stranded DNA-guided electropolymerization of polythionine nanostrip to the sensing of H2O2

▶ Polythionine (PTH) nanostrips had been firstly electropolymerized with the guidance of single stranded DNA molecular template. ▶ A preferential alignment of thionine monomers was along the flexural DNA strands. ▶ The growth of PTH chains was along the DNA strands. ▶ PTH presented a flexural nanostrip morphology.