Chemically Modified Electrodes, Volume 11

With contributions from a global team of professional authors, this e-book comprises the newest tendencies in tailoring interfacial homes electrochemically. The chapters disguise quite a few natural and inorganic compounds, with functions starting from electrochemistry to nanotechnology and biology.
Of curiosity to actual, floor and electrochemists, fabrics scientists and physicists.

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The use of PEDOT-PSS is attractive because it easily forms thin films through many conventional techniques. In this study, Lee and coworkers show that the gold nanoparticle/PEDOT-PSS-modified ITO electrodes displayed high selectivity and sensitivity for NADH, making these nanostructured electrodes particularly attractive for NADH-sensing applications as well as in those that use NADH as a cofactor for enzymatic reaction. 18). The carbon-nanotube-inspired gold nanowires were synthesized through templated electrodeposition.

25 Scheme for the use of molecular wires to sense DNA hybridization where a capture DNA is used to attract the target DNA and then a signal DNA with ferrocene labels is hybridized to signal the hybridization event. (Reprinted from [138] J. Mol. Diagn. ) electronics. 25). The self-assembled monolayer used to modify the electrode to give it selectivity for DNA comprised three components. These were (1) thiolated DNA molecules to selectively detect complementary strands of DNA in the sample, (2) a oligoethylene glycol (OEG) -terminated alkanethiol as an antifouling layer that resists nonspecific binding of DNA and proteins and (3) oligo (phenylethynyl) thiols as the molecular wires to allow electrochemical communications to the underlying electrode.

The other key advantage is the spatial control that SAMs afford. One of the most dramatic examples of this spatial control is a reversibly switching surface developed by Langer and coworkers [143, 144]. 27. A gold surface was modified with an alkanethiol SAM with a labile head group that had a footprint larger than the size of the alkyl chain such that the molecules could not close pack on the electrode surface. Removal of the labile headgroup left a hydrophilic mercaptohexadecanoic-acid-modified surface.

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