Electrode reactions of nitroxide radicals

Nitronyl Nitroxide Radicals as Organic Memory Elements with Both n‐ and p‐Type Properties

“…All starting materials were purchased from Aldrich and used without further purification. 1 H and 13 C NMR spectra were obtained on a Bruker Avance 400 spectrometer. NN-PhCatMOM 2 was prepared as described in the literature.…”

“…[13] However, for the complete circuit of the organic semiconducting device using PTMA, an n-type redox active material as a partner to the p-type material is required. Some previously reported polymer-based organic radical memory devices required additional organic layers, such as an electron-accepting layer for n-type [6a] and even a metalparticle-dispersed dielectric layer for actuation of the organic memory device.…”

Kinetic study of the catalytic oxidation of benzyl alcohols by phthalimide-N-oxyl radical electrogenerated in acetonitrile using rotating disk electrode voltammetry

“…4(b), the value of D was determined to be (1.90 ± 0.07) · 10 À5 cm 2 s À1 . This value is comparable to the literature value of a typical nitroxyl radical, 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) (1.17 · 10 À5 cm 2 s À1 ) [40]. For the kinetic study of electrocatalytic reactions, rotating disk electrode voltammetry is more convenient than cyclic and linear sweep voltammetries [41,42].…”

Nitroxyl Radical Self‐Assembled Monolayers on Gold: Versatile Electroactive Centers in Aqueous and Organic Media

“…As in solution, [12,13] apparent redox potentials (E app (at pH 7)~0 .71 V vs Ag/AgCl/KCl sat ) and shape of SAMs prepared from 1 a, 1 b and 1 c are not pH dependent (Figure 1). Between pH 0 and pH 10.5, voltammetric waves ( Figure SI-3) are quasi chain-length (n) independent and close to an "ideal system" (i.e.…”

“…[6][7][8] The electrochemical oxidation of TEMPO is known to be a stable and reversible one-electron process in both aqueous [9][10][11] and non-aqueous electrolytes. [12,13] Despite the wide electrochemical applications of nitroxyl radical, rare works have been devoted to design and elaborate of redox-responsive TEMPO SAMs. [14][15][16] In 1997, Fuchigami et al [14] reported the first preparation of stable self-assembled TEMPO-modified electrodes in acetonitrile: the electrochemical stability was only reached with highly diluted mixed SAMs of nitroxyl radical derivative and hexadecanethiol.…”