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viologen

   Also found in: Wikipedia 0.02 sec.
viologen [vī′äl·ə·jən]
(chemistry)
Any member of a group of chlorides of certain quaternary bases derived from γ,γ′-dipyridyl that are used as oxidation-reduction indicators; color is exhibited in the reduced form.


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For sulphide oxidase estimation the fresh gill and foot of one Adipicola MV and all the soft parts from four very small mytilids were homogenized in distilled water, centrifuged, and the supernatant fluid from each was assayed for sulphide oxidase activity by the benzyl viologen reduction method (Powell & Somero 1985) at 29[degrees]C.
We have investigated the sensing capability of a commercially available polythiophene, poly[2-(3-thienyl)ethoxy4-butylsulfonate] (Mw = 1,000,000 g/mol), in aqueous solution, using methyl viologen ([MV.
In the first method, the pattern formation was developed from photo-induced reaction between polyaniline (PANI) and viologen through a mask.
 
 
 
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