Abstract
Chemically modified electrodes, decorated with covalently tethered poly(ferrocenylsilane) – PFS chains, are fabricated. Robust, relatively dense redox-active films with a height of around 10 nm are successfully formed by reaction of poly(ferrocenyl(3-iodopropyl)methylsilane) with amine-terminated monolayers on silicon or gold surfaces. The electrochemical properties of the surface-immobilized PFS chains are studied using cyclic voltammetry (CV) and differential pulse voltammetry (DPV), both in aqueous and organic media. Information on the properties of these films as a function of redox state is gained using quantitative adherence measurements between the films and AFM tips. An ascorbic acid electrochemical sensor based on these surface-anchored PFS chains, exhibiting a high sensitivity and stability, was fabricated. The PFS layers described are easily derivatized, thus forming a platform for creating highly tailorable redox-active interfaces.
Original language | English |
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Pages (from-to) | 11261-11267 |
Number of pages | 7 |
Journal | Journal of materials chemistry |
Volume | 22 |
DOIs | |
Publication status | Published - 2012 |
Keywords
- METIS-289592
- IR-84742