Redox responsive poly(ferrocenylsilane) (PFS) films have great potential for electrode modifications in electrochemical sensing. Robust, dense PFS layers, featuring imidazolium side groups were successfully electrografted to Au substrate from ionic liquid (IL) 1-ethyl-3-methylimidazolium ethyl sulfate. We will discuss the electrografting process in detail. Films with thickness in the 10 nm range were obtained and characterized by electrochemistry, AFM, XPS, contact angle, and FTIR for the reduced and oxidized PFS, respectively. An ascorbic acid sensor based on surface-anchored electrografted PFS exhibits a high sensitivity, stability and reproducibility.

Electrografting of redox active organometallic poly(ionic liquids) from ionic liquid by cathodic reduction: Synthesis and applications

248th National Meeting (2014)

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