Theoretical and electrochemical study of the mechanism of anthraquinone-mediated one-electron reduction of oxygen: the involvement of adducts of dioxygen species to anthraquinones

An oxygen amperometric gas sensor based on its electrocatalytic reduction in room temperature ionic liquids

“…They are in fact able to provide hydroperoxide anion radicals or hydrogen atom transfers from semiquinone anion radicals to oxygen [48,49]. Instead, among the quinone containing compounds tested by us, NQ is the sole species bearing hydroxyl groups (in 1 and 4 positions), while in THTDP-AQS (but also in AQ) the anthraquinone moiety does not display hydroxyl groups.…”

Drug–GSH interaction on GSH–Au modified electrodes: A cyclic voltammetry and electrochemical impedance spectroscopy study

“…This behavior was assigned to the monoelectronic reduction of a drug -oxygen complex, as stated for other anthraquinone derivatives in literature [40]. If this wave corresponds to the reduction of the doxorubicin -oxygen complex, (DO 2 ) + e = (DO 2 ) ÀÁ , the possible follow up reaction would be ðDO 2 Þ ÀÅ ¼ D þ O À 2 , explaining the formation of superoxide anions in the system.…”

Effects of the molecular structure on the electrochemical properties of naturally occurring α-hydroxyquinones. An electrochemical and ESR study

“…In this context, it is useful to perform these experiments under aprotic conditions, since the quinones and their corresponding anions are solvated far less efficiently [18,19] than in water. Moreover, aprotic solvents mimic nonpolar environments of the cell where much of the biological electron transfer occurs [20][21][22][23][24][25].…”