The redox potentials of divalent single steps in tetravalent can be exactly calculated by means of a modified Nernst equation—for hexavalent system this is possible by an approximation method. The redox potent
Redox polymers based upon the hydroquinone–quinone redox system are prepared by the addition of hydroquinone and hydroquinone derivatives to preformed polystyrene matrices. Conventional gel and macroreticular styrene–divinylbenzene copolymers were chloromethylated with chloromethyl ether by using a Friedel-...
ortho- and para-Quinoneimines are analogous to catechol and hydroquinone derivatives in that one of the carbonyl oxygen atoms is replaced by an NH substituent. Since oxygen is more electronegative than nitrogen, the redox potentials of these compounds also decrease in the same order. Quinoneimines ...
NiBr2·dtbbpy shows a single clear redox feature corresponding to a NiII/Ni0 transition; NiBr2·ttbtpy shows two redox features: a higher-potential feature corresponding to NiII/NiI and a lower-potential feature corresponding to NiI/Ni0. Ni/ligand solutions often generate mixtures of different...
The biological activity of quinones is often associated with their electron transfer levels and with their oxidation/reduction potential [3]. Quinone/hydroquinone redox pairs have been widely used in electrochemical studies due to their rapid availability and because they exhibit a good electrochemical be...
Two types of quinone, anthraquinone (AQ)nand tetrachlorohydroquinone (TCHQ), which have different redoxnpotential, were introduced into ZTC framework and werenelectrochemically characterized in a sulfuric acid electrolyte. Finally,na hybrid redox capacitor was assembled from two differentnfunctionalized-ZTC...
The redox reaction mechanism of a poly(phenanthrene quinone)/graphene composite (PFQ/rGO) was investigated using operando attenuated total reflection infrared (ATR-IR) spectroscopy during cycling of Li and Mg batteries. The reference phenanthrene quinone and the Li and Mg salts of the hydroquinone ...
trometric analysis indicated that the cannabinoid derivative was the Supplementary Figs. S28–S31), an isomerisation product of HU-331 hydroxyquinol (2) that, to our k5n(oCw21lHed2g7Oe,3h; aFsigy.e 3tatoanbde reported in any study of either CBD (1) degradation or hydroquinone ...
16) exert their therapeutic effect via quinone-hydroquinone redox cycling, leading to ROS generation (Asche, 2005). These ROS help destroy the cancer cells, although selectivity is not absolute. Sign in to download full-size image Fig. 16. Redox cycling of quinone metabolites to ROS. There ...
Employing lignin and its derivatives as active materials in supercapacitor electrodes and as a redox additive in electrolytes has the potential to minimize environmental pollution and energy scarcity while also providing economic benefits. Keywords: hydroquinone; lignin; quinone; redox electrolytes; ...