The realization of lithium-oxygen (Li-O2) batteries has been impeded by parasitic reactions that cause cell component degradation, often accompanied the release CO2 gas during oxidation reactions. use...

oxidations of organic sulfides, amines, and even enzymes catalyzed by purified and microsomal forms of prostaglandin cyclooxygenase-hydroperoxidase have been studied using O2 incorporation into arachidonic acid to monitor oxygenase and [14C]15-hydroperoxyprostaglandin E2 reduction to prostaglandin E2 to measure hydroperoxidase. The oxygenase was protected by phenol against the irreversible deac...

Reaction intermediates define the chemical steps of transformation from substrates to products, and capture of intermediates along catalytic pathways remains one focal point in the studies of enzymatic mechanisms. Performing enzymatic reactions in protein single crystals has been shown to be very effective in trapping and identifying unstable intermediates. In this critical review, we provide s...

An anionic iron(III)-porphyrin-testosterone conjugate 1-Fe has been synthesized and fully characterized. It has been further associated with a neocarzinostatin variant, NCS-3.24, to generate a new artificial metalloenzyme following the so-called 'Trojan Horse' strategy. This new 1-Fe-NCS-3.24 biocatalyst showed an interesting catalytic activity as it was found able to catalyze the chemoselectiv...

The influence of a surface potential gradient on the location and extent of electrochemical reactions was examined using a scanning electrochemical microscope. A linear potential gradient was imposed on the surface of a platinum-coated indium tin oxide electrode by applying two different potential values at the edges of the electrode. The applied potentials were used to control the location and...

We studied the OH oxidation of submicron aerosol particles consisting of pure palmitic acid (PA) or thin (near monolayer) coatings of PA on aqueous and effloresced inorganic salt particles. Experiments were performed as a function of particle size and OH exposure using a continuous-flow photochemical reaction chamber coupled to a chemical 5 ionization mass spectrometer (CIMS) system, for detect...