Formation of sulfinyl oxide and singlet oxygen in the reaction of thianthrene cation radical and superoxide ion

Differential Effects of Relaxation Techniques on Ultraweak Photon Emission

“…[21][22][23] Chemiluminescence was already utilized in the late 1970s and 1980s to monitor enzymatic reactions and biochemical processes involving free radicals in organ systems, [24][25][26][27][28] blood, [28][29][30][31][32] and subcellular fractions. [33][34][35][36][37][38][39][40][41] Novel macroscopic photonic counting and imaging technologies, as well as measurement protocols, have recently been developed for the quantitative recording of human body UPE in the wavelength spectrum of emission bands: 480, 520, and 575 nm corresponding with systems undergoing lipid peroxidation and the production of 1 O 2 -paired molecules. [42][43][44][45][46] The hypothesis that long-term meditation has influence on the oxidative stress of the organism has been recently studied by using the detection of lower lipid peroxide levels in the plasma of practitioners of TM, 47 Zen meditation, 48 and yoga.…”

Photosensitized Electron Transfer Oxidation of Sulfides: A Steady‐State Study

“…Addition of O 2 · – to a sulfide radical cation has been demonstrated to occur (in the case of thianthrene),21a but how efficient it is is doubtful as the highly exoergonic back electron transfer (path e ″, Δ H = –64 kcal mol –1 for Me 2 S · + ) should compete favourably 5,6. Furthermore, the fact that oxidative C–S bond cleavage is also observed, although with a lower efficiency, with TPP + , which does not form O 2 · – , leaves room for an alternative hypothesis that non‐activated O 2 is involved.…”

Suppression of Parasitic Chemistry in Li–O2 Batteries Incorporating Thianthrene-Based Proposed Redox Mediators

“…In parallel with our synthetic efforts which are discussed in section of this work, we investigated the chemistry of I* toward Li 2 O 2 . Ando et al exposed thianthrenium perchlorate to water and found that this gave a nearly 1:1 mixture of I and thianthrene sulfoxide ( Ib ) . Similar experiments with potassium superoxide (KO 2 ) and sodium peroxide (Na 2 O 2 ) gave significant quantities of oxygen (O 2 ), I , and Ib .…”

“…Despite sharing common structural elements with EPT or MPT, I and analogous lower row chalcogenides do not appear to have been investigated as redox mediators. Thianthrene ( I ) is known to form stable radical cations ( I* ) by both chemical oxidants and electrochemical methods. − The chemistry of the radical cation toward a wide range of nucleophiles has been extensively explored. − Despite its well-known chemistry, we found only one paper where I has been employed as redox shuttle for overcharge protection of Li-ion batteries . Given the high oxidation potential of I (4.15 V vs. Li 0 /Li + ) compared to other redox mediator candidates, we believe that this scaffold has not been investigated due to a lack of commercially available analogs with lower oxidation potentials.…”