Linked Life Data

2022346

Source:http://linkedlifedata.com/resource/pubmed/id/2022346

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1991-6-6
pubmed:abstractText
Bipyridinium compounds such as the viologens (V2+) have been used extensively as redox indicators, but radical dimerization leads to reduction potentials of the oxidant/radical one-electron couple, E(V2+/V2+) varying with radical concentration: a particular problem with benzyl viologen. Pulse radiolysis has been used to characterize the one-electron transfer equilibria between methyl (MV2+) or benzyl (BV2+) viologen and a 2-nitroimidazole (misonidazole), and between methyl and benzyl viologens directly. Total radical concentrations were typically approximately 0.4 mumol dm-3 to minimize dimerization. Based on E(MV2+/MV2+) = -450 mV, a value of E(BV2+/BV2+) = -374 mV is now recommended. The implications for other 'reference' redox couples are discussed.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
8755-0199
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
57-67
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
The reduction potential of benzyl viologen: an important reference compound for oxidant/radical redox couples.
pubmed:affiliation
Cancer Research Campaign, Mount Vernon Hospital, Northwood, Middlesex, U.K.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't