On December 8, 2020, Markovic, Aleksandra; Buschbeck, Leon; Brand, Izabella; Dosche, Carsten; Christoffers, Jens; Wittstock, Gunther published an article.Formula: C10H22S The title of the article was Electrochemical Activation of Self-Assembled Monolayers for the Binding of Effectors. And the article contained the following:
A self-assembled monolayer (SAM) on Au was prepared from a diaminoterephthalate (DAT) derivative as functional mol. and 1-decanthiol as a backfiller. The DAT derivative is N-protected by a tert-butyloxycarbonyl (Boc) group and is anchored to the Au surface via a liponic acid as a stable anchor group. The terminal DAT moiety exhibits interesting effector properties such as fluorescence and electrochem. activity. Irreversible oxidation of the monolayer at 0.4 V (Hg|Hg2SO4) in 0.1M HClO4 triggers deprotection of the DAT group and subsequent chem. reactions, during which 10% of the DAT groups of the original SAM are transformed to a new surface-bound, quasi-reversible redox couple with a formal potential of 0.0 V (Hg|Hg2SO4) and a standard rate constant of 8 s-1 in 0.1M HClO4. Immersion of the mixed SAM in 0.1M HClO4 at open circuit potential or oxidation in 0.1M H2SO4 did not produce this surface-bound redox couple. The monolayers were thoroughly characterized by XPS and polarization modulation IR reflection absorption spectroscopy (PM IRRAS) after the different preparation steps indicating only minor changes in the overall composition of the monolayer, in particular, the preservation of the heteroatoms. The new redox couple is likely a diimine, in agreement with its ability to bind nucleophiles such as anilines by conjugate addition that could be followed by multicycle voltammetry and XPS. The DAT effector group is especially interesting because it can also report the binding reaction by changed electrochem. and fluorescence signals. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Formula: C10H22S
The Article related to electrochem activation assembled monolayer binding effector, Placeholder for records without volume info and other aspects.Formula: C10H22S
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