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Iodonium-based pro-adhesive layers for robust adhesion of PEDOT:PSS to surfaces. | LitMetric

Iodonium-based pro-adhesive layers for robust adhesion of PEDOT:PSS to surfaces.

Sci Technol Adv Mater

Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland.

Published: April 2024

AI Article Synopsis

Article Abstract

Electrochemical grafting of organic molecules to metal surfaces has been well-known as an efficient tool enabling tailored modification of surface at the nanoscale. Among many compounds with the ability to undergo the process of electrografting, iodonium salts belong to less frequently used, especially when compared with the most popular diazonium salts. Meanwhile, due to their increased stability, iodonium salts may be used in situations where the use of diazonium salts is constrained. The aim of this study was to examine the effect of the electrochemical reduction of iodonium salts on the physicochemical properties of Pt electrodes, and the possibility to form pro-adhesive layers facilitating further functionalization purposes. Consequently, we have selected four commercially available iodonium salts (diphenyliodonium chloride, bis(4-tertbutylphenyl)iodonium hexafluorophosphate, (4-nitrophenyl)(2,4,6-trimethylphenyl)iodonium triflate, bis(4-methylphenyl)iodonium hexafluorophosphate), and attached them to the surface of Pt electrodes by means of an electrochemical reduction process. As-formed layers were then extensively characterized in terms of wettability, roughness and charge transfer properties, and used as pro-adhesive coatings prior to the deposition of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate), PEDOT:PSS. Due to the increase in hydrophilicity and roughness, modified electrodes increased the stability of PEDOT:PSS coating while maintaining its high capacitance.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11047218PMC
http://dx.doi.org/10.1080/14686996.2024.2338786DOI Listing

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