Poly benzoquinone reduction

Figure 14.4.3 Experimental results for the reduction of benzoquinone (BQ) through a film of poly(vinylferrocene) on a Pt RDE. The reciprocal current [normalized for the concentration of BQ in solution 5.82, 3.84, and 1.96 mM (top to third curves)] vs.

It appears that the active participation of benzoquinone in the process of thermal oxidation of hydrocarbons is essentially connected also with the formation of hydroquinoic structures. The reduction of 1,4-benzoquinone and anthra-quinone in the course of thermal processing of polypropylene was proved by220). The major part of benzoquinone was transformed into hydroquinone polypropylene was the H-donor here. Due to this heat-induced reaction of benzoquinone, poly-... 

If quinones are used as the oxidant, the reaction of the OH radical adducts of the nucleobases proceeds by outer sphere electron transfer to yield a carbocation but not an adduct [118]. The rate constant for this interaction shows a strong dependence on the one-electron reduction potential of the quinone. This reaction does not lead to ssb induction in poly C in the presence of benzoquinone but to a reduction in the yield of ssb. 

Pyrrole has been functionalized with both reducible and oxidizable substituents. Examples of the first group are compounds 51-53, which have been homo- and copolymerized [254,255] poly(51) has been demonstrated to catalyze oxygen reduction. Attempts to polymerize 54 did not lead to a clean reaction [256]. Substantial amounts of dark-colored soluble products were formed. The benzoquinone 55 was successively polymerized [256] and the electrochemical behavior of the relevant polymer was studied. 

Gold electrodes coated with PP or poly(l-methylpyrrole) were used for the oxidation of hydroquinone and the reduction ofp-benzoquinone in aqueous acidic solutions as well as in a water/organic solvent mixture (and references cited therein). While with uncoated Au electrodes the anodic and cathodic peak separations are larger than 200 mV, the PP coating reduced the separation to 60 mV. This corresponds... 

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