Any of a series of synthetic compounds related to the weedkiller paraquat, used as redox indicators. They contain heteroaromatic cations of the general formula (C5H4NR)22+.
- The intermolecular interactions between the viologens and the macrocyclic molecule were investigated in a solution before photoirradiation.
- Methyl viologen also affects electron-transducing reactions in the endoplasmic reticulum and in mitochondria.
- The transgenic plants were also more tolerant to the oxidative damage caused by methyl viologen showing less chlorosis and less electrolyte leakage than the controls.
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