Ferrocene Functional Polymer Brushes on Indium Tin Oxide via Surface-Initiated Atom Transfer Radical Polymerization

• Published in: Langmuir Vol. 26; no. 3; pp. 2083 - 2092
• Main Authors: Kim, Bo Yun, Ratcliff, Erin L, Armstrong, Neal. R, Kowalewski, Tomasz, Pyun, Jeffrey
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 02.02.2010
• Subjects: Chemistry; Colloidal state and disperse state; Electrochemistry; Exact sciences and technology; General and physical chemistry; Materials: Nano-and Mesostructured Materials, Polymers, Gels, Liquid Crystals, Composites; Surface physical chemistry; Correlation; Film; Molar mass; Polymerization; Indium oxide; Functional polymer; Ferrocene polymer; Characterization; Electrodes; Thickness; Substrate; Electrochemical properties; Synthesis; Acids; Tin oxide; Preparation; Electrochemistry; Monomer; Block copolymer
• ISSN: 0743-7463; 1520-5827
• DOI: 10.1021/la902590u

The synthesis and electrochemical characterization of ferrocene functional polymethacrylate brushes on indium tin oxide (ITO) electrodes using surface-initiated atom transfer radical polymerization (SI-ATRP) is reported. SI-ATRP of ferrocene-containing methacrylate (FcMA) monomers from a phosphonic acid initiator-modified ITO substrate yielded well-defined homo- and block (co)polymer brushes of varying molar mass (4,000 to 37,000 g/mol). Correlation of both electrochemical properties and brush thicknesses confirmed controlled SI-ATRP from modified ITO surfaces. The preparation of block copolymer brushes with varying sequences of FcMA segments was conducted to interrogate the effects of spacing from the ITO electrode surface on the electrochemical properties of a tethered electroactive film.