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Guanine modifications following ionization of DNA occurs predominantly via intra- and not interstrand charge migration: an experimental and theoretical study

Article Abstract:

A series of double-stranded DNA samples of a known sequence are used to examine whether 193 nm light induced charge migration in DNA in an aqueous, aerated solution occurs predominantly by inter- or interstrand processes. The results show that photo ionization of DNA results predominantly in sequence dependent intra- and not understand charge migration with localization at the most readily oxidized base like guanine.

Biological Product (except Diagnostic) Manufacturing, Drugs, Deoxyribonucleic Acid, DNA, Chemistry, Physical and theoretical, Physical chemistry, Ionization

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Kinetic analysis of the reaction between electrogenerated superoxide and carbon dioxide in the room temperature ionic liquids 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and

Article Abstract:

An investigation was conducted on the reduction of oxygen in the presence of carbon dioxide by cyclic voltammetry at a gold microdisk electrode in two room-temperature ionic liquids. With increasing levels of CO2, cyclic voltammetry showed an increase in the reductive wave and diminishing of the oxidative wave, which indicated that the generated superoxide readily reacts with carbon dioxide.

Industrial Gas Manufacturing, Industrial gases, Carbon Dioxide, Electric properties, Ionic crystals

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