Journal ArticleDOI
Charge Transport in Ferrocene-Containing Polyacrylamide-Based Redox Gels
TLDR
In this article, the charge transport properties of the redox gels formed from the copolymerization of vinylferrocene (VF) with acrylamide and N,N-methylenebisacrylamides (PVAB gels) are described.Abstract:
The charge transport properties of the redox gels formed from the copolymerization of vinylferrocene (VF) with acrylamide and N,N‘-methylenebisacrylamide (PVAB gels) are described. The apparent electron diffusion coefficients (Dap) measured by cyclic voltammetry and chronocoulometry exhibit an upward bowlike curvature vs immobilized VF concentration ([VF]imm) within the range 0.1−1.60 mM in 0.10 M supporting electrolyte (NaH2PO4/Na2HPO4, NaClO4, or NaNO3). The range of measured Dap values [(0.6−6.0) × 10-7 cm2 s-1] can be interpreted in terms of the mean-field model developed by Blauch and Saveant (Blauch, D. N.; Saveant, J. M. J. Am. Chem. Soc. 1992, 114, 3323). The large Dap values are attributed to the large λ (range of molecular motion permitted to the ferrocene residues) and large kex (bimolecular electron self-exchange rate constant of the ferrocenes in the PVAB gels). It was further observed that Dap decreases on increasing the electrolyte (NaClO4 or NaNO3) concentration from 0.10 to 0.50 M, especi...read more
Citations
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Journal ArticleDOI
A laccase-wiring redox hydrogel for efficient catalysis of O2 electroreduction.
TL;DR: The design, synthesis optimization of the composition, and characterization of the +0.55 V (AgAgCl) laccase-wiring redox hydrogel results in the tethering of redox centers to the polymer backbone through eight-atom-long spacer arms, which facilitate collisional electron transfer between proximal redox Centers.
Journal ArticleDOI
Synthesis and charge transport properties of redox-active nitroxide polyethers with large site density
TL;DR: In this article, a 5-membered ring with the smallest equivalent weight among the robust cyclic nitroxides was directly bound to a poly(ethylene oxide) chain, yielding a high density redox polymer with a weight-specific theoretical capacity of 147 mA h/g.
Journal ArticleDOI
Poly(ferrocenylsilane) Gels and Hydrogels with Redox-Controlled Actuation.
TL;DR: Optical properties of PFS composite colloidal crystal films, composed of monodisperse silica spheres embedded in such PFS networks, are shown to be influenced by solvent swelling or redox chemistry, allowing the use of these composites in photonic crystal full-color displays.
Journal ArticleDOI
Diffusion-Cooperative Model for Charge Transport by Redox-Active Nonconjugated Polymers
Kan Sato,Rieka Ichinoi,Ryusuke Mizukami,Takuma Serikawa,Yusuke Sasaki,Jodie L. Lutkenhaus,Hiroyuki Nishide,Kenichi Oyaizu +7 more
TL;DR: It is quantitatively rationalized that the limited Brownian motion of the redox centers bound to the polymers resulted in the 103-4-fold decline of the bimolecular and heterogeneous charge transfer rate constants, which had been unexplained for half a century.
Journal ArticleDOI
Redox active gels: synthesis, structures and applications
TL;DR: This review outlines major developments that focused on the incorporation of redox responsive components that are covalently attached as pending or crosslinking groups along a polymer backbone.
References
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