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Showing 1 to 8 of 8 for “"Methyl radicals"”.
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The role of bulk versus surface bound H in the catalytic hydrogenation of methyl radicals and ethylene on Ni
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1994.
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Elementary processes in alkane-based reactive ion etching of III-V semiconductors
… the interactions of some relevant ions and free radicals with these semiconductors were examined. To simulate the low energy ion bombardment that occurs in RIE using alkanes, GaAs and InP were exposed to 20-500 eV carbon ions, using a mass-separated carbon ion beam in an ultrahigh vacuum chamber. …
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Study of elementary reactions of combustion importance at elevated temperatures and pressures
… chambers. Several reactions of OH, CH_3 and HO_2 radicals are studied. The pressure range covered in this study is 1 - 100 bar and the temperature range is 292 - 834 K. The experimental approach used is laser photolysis coupled to UV transient absorption spectroscopy. A unique high pressure …
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The detection and characterisation of novel alkyl spin-adducts of PBN and its derivatives using capillary gas chromatography coupled to electron-ionisation mass spectrometry
… reactive. Aldehydes may react with hydroxyl radicals forming radicals which, in turn, react with cellular components. Hydroxyl free radicals were generated by Fenton-based chemistry and reacted with aliphatic aldehydes to produce secondary radicals in the presence of the spin-trapping agent …
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Characterization of a novel methyl radical source and related thin film growth studies
An ultrahigh vacuum compatible methyl (CH3) radical source has been developed. The methyl radicals were generated by dc- and microwave-discharge processes in either of two ways. In the first, argon (Ar) or an Ar/Xe mixture was passed through the discharge to produce inert gas metastables that react …
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Chemical probes for the study of mitochondrial oxidative stress
… the electron transport chain. ROS may be free radicals, or molecules that rapidly form free radicals. These free radicals can undergo various rapid reactions with cellular components resulting in cell damage, and eventually cell death. Therefore, there is much interest in studying ROS …
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Chemical Studies of some Fungi
… quinol acetates have been examined. Facile loss methyl radicals from aromatic methoxy groups and ketene from the acetate derivatives was observed. Decarbonylation and fragmentation involving the heterocyclic ring system resulted in peaks of only minor intensity. The ready loss of substituents as …