Ferrocene-Containing DNA Monolayers: Influence of Electrostatics on the Electron Transfer Dynamics


Ivan Magriñá , Mayreli Ortiz , Anna Simonova , Michal Hocek Ciara K O’ Sullivan , Robert J Forster

A 153-mer target DNA was amplified using ethynyl ferrocene dATP and a tailed forward primer resulting in a duplex with a single-stranded DNA tail for hybridization to a surface-tethered probe. A thiolated probe containing the sequence complementary to the tail as well as a 15 polythimine vertical spacer with a (CH2)6 spacer was immobilized on the surface of a gold electrode and hybridized to the ferrocene-modified complementary strand.

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