• The viologen paraquat (R = methyl), is a widely used herbicide. (wikipedia.org)
  • When the alkylating agent is a small alkyl halide, such as methyl chloride or methyl bromide, the viologen salt is often water-soluble. (wikipedia.org)
  • Common derivatives are methyl (see paraquat), long chain alkyl, and benzyl. (wikipedia.org)
  • Both NRs used reduced methyl viologen (MVH) or benzyl viologen (BVH). (academicconcepts.net)
  • Viologens are organic compounds with the formula (C5H4NR)2n+. (wikipedia.org)
  • This has previously been impractical with organic mediators, such as indoles, viologens and quinones, whose optical spectra interfere strongly with those of the protein. (scite.ai)
  • The toxicity of the 2,2'-, 4,4'-, or 2,4'-bipyridylium-based viologens is related to their ability to form stable free radicals. (wikipedia.org)
  • Viologens, in their dicationic form, typically undergo two one-electron reductions. (wikipedia.org)
  • Following cleavage with Factor Xa and purification to homogeneity, the soluble 83-kDa enzyme retained biotin sulfoxide reductase activity using reduced methyl viologen or reduced benzyl viologen as artificial electron donors. (rhea-db.org)
  • We have successfully constructed hydrogen-bonded supramolecular assemblies based on a diprotonated saddle-distorted porphyrin (H 4 DPP 2+ ) and redox-active molecules bearing a carboxylate group, such as a Ru II polypyridyl complex (Ru II COO - ) that can act as an electron donor and a benzyl viologen derivative (BV 2+ COO - ) that can act as an electron acceptor. (ewha.ac.kr)
  • Viologens have been modified to optimize their performance in such batteries, e.g. by incorporating them into redox-active polymers. (wikipedia.org)
  • Compound 3 is a very strong reducing agent, with a redox potential of −1.48 V. The widely used herbicide paraquat is a viologen. (wikipedia.org)
  • The amount of hydrogen evolved in the process is indicated by a simple redox dye, benzyl viologen. (sciencecheerleaders.org)
  • No sophisticated or expensive hydrogen detection equipment is required-only a redox dye, benzyl viologen, which turns purple when it is reduced. (sciencecheerleaders.org)
  • and the redox indicator benzyl viologen is established in microseconds after generation of the radicals by pulse radiolysis and indicated E(LC2+/LC. (ox.ac.uk)
  • Viologens are organic compounds with the formula (C5H4NR)2n+. (wikipedia.org)
  • Viologens are called so, because these compounds produce violet color on reduction [violet + Latin gen, generator of]. (wikipedia.org)
  • The basic nitrogen centers in these compounds are alkylated to give viologens: (C5H4N)2 + 2 RX → [(C5H4NR)2]2+(X−)2 The alkylation is a form of quaternization. (wikipedia.org)
  • V]+ The radical cations are blue for 4,4'-viologens and green for 2,2'-derivatives. (wikipedia.org)
  • Other viologens have been commercialized because they can change color reversibly many times through reduction and oxidation. (wikipedia.org)
  • The name viologen alludes to violet, one color it can exhibit, and the radical cation (C5H4NR)2+ is colored intensely blue. (wikipedia.org)
  • Viologens have been commercialized as electrochromic systems because of their highly reversible and dramatic change of color upon reduction and oxidation. (wikipedia.org)