Journal of Polymer Science, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 28, 2024
ABSTRACT Ferrocenyl‐containing Fe(II)‐bipyridinedicarboxamide polysiloxane complexes with two redox metal centers were obtained by anionic ring‐opening polymerization, polycondensation, and complexation reactions utilizing various Fe II :Bipy molar ratios of 1:(3–12). The polymer ligand was characterized liquid‐state NMR, FTIR, gel permeation chromatography ( M n = 8800). structure the polymer‐metal (PMCs), that is, presence ferrocenyl groups [Fe (Bipy) 3 ] coordination cross‐links –N Bipy bond formation, confirmed solid‐state UV–vis, EDX. PMCs exhibit multiredox activity showing three waves at E 1/2 ≈ −1.3, 0.2, 1.0 V related to Fc/Fc + couple, [Fe(Bipy) 2 /[Fe 2+ , /[Fe(Bipy) 3+ transformations. possess electrochromic properties resulting from reduction–oxidation (Fc/Fc ) fragments leading changes in intensity bands 628, 542, 380 nm UV–vis spectra (coloring efficiency reaches 13.4 cm ·C −1 ). are flexible, stretchable, mechanically strong silicone materials elongation break, tensile strength, Young's modulus reaching 110%, 3.5 MPa, 21.8 respectively, self‐healing ability 100°C. described expand applications as engineering for fabrication (opto)electronic devices protective coatings a long service life compared previously reported polymers.
Language: Английский