Electron acceptor complexing agent

The influence of DNA on the photo-electron transfer process between a variety of donor-acceptor couples has been examined during the last ten years. For all the systems studied, the metal complex interacts with the DNA and plays the role of electron acceptor or donor in the hydrophobic DNA microenvironment, whereas the other partner of the process, i.e. the reducing or oxidising agent in the ground state, is localised either on the DNA double helix, or does not interact with the nucleic acid and remains in the aqueous phase. Thus three... 

As mentioned before (Sect. 3.1) Newman developed tetranitrofluorenylidene oxamino-propionic acid (TAPA, 79) as a new agent for the resolution of hexahelicene. Its molecular structure, including a large moiety with strong electron acceptor properties, promised good complexing properties towards aromatic compounds like hexahelicene. 

For each of the three reactions catalyzed by the NADH dehydrogenase complex, identify (a) the electron donor, (b) the electron acceptor, (c) the conjugate redox pair, (d) the reducing agent, and (e) the oxidizing agent. 

The first step of the reaction is a single-electron oxidation of the aromatic substrate to form a cation-radical [193,194]. Oxidizing agents for this reaction include Bronsted acids, oxidative Lewis acids, halogens (i.e., Br2), metal salts (e.g., Ti(CF3C02)3), electron-donor-acceptor complexes, irra-... 

It should be noted that the dye-linked assay system is artificial in every way the electron acceptor may also be an inhibitor it has a high pH optimum (about pH 9) it requires ammonia as activator, but this may also inhibit cyanide is a competitive inhibitor and may be used as a protective agent in the absence of added substrate a high rate of dye reduction occurs which may or may not be taken into account when calculating rates of reaction. This complexity and confusion is mentioned here as an explanation for the length and complexity of some the following discussion. 

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