The behavior of triacetoneaminoxyl (TANO) and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) in irradiated aqueous solutions in the presence of oxygen

Anastassopoulou, JD; Chandrinos, JD; Rakintzis, NTh

dc.contributor.author	Anastassopoulou, JD	en
dc.contributor.author	Chandrinos, JD	en
dc.contributor.author	Rakintzis, NTh	en
dc.date.accessioned	2014-03-01T01:05:59Z
dc.date.available	2014-03-01T01:05:59Z
dc.date.issued	1981	en
dc.identifier.issn	01465724	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9105
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-49149138963&partnerID=40&md5=1ea01f9fd732e2c615aafaa99394419b	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.classification	Physics, Atomic, Molecular & Chemical	en
dc.title	The behavior of triacetoneaminoxyl (TANO) and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) in irradiated aqueous solutions in the presence of oxygen	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1981	en
heal.abstract	The mechanism of the γ-radiolysis of the free nitroxyl radicals TANO and TEMPO in neutral aqueous solutions in the presence of oxygen has been investigated. The disappearance of TANO and TEMPO was followed by measuring the decrease in absorbance at 235 and 245 nm, respectively. The kinetic results obtained can be interpreted on the basis of competition between the nitroxyls and oxygen for the reducing radicals H and e-aq, produced in irradiated water. From this competition the rate constants for the reaction of TANO and TEMPO with the reducing radicals were determined: k(TANO + Rred) = 6.4 × 1010 and k(TEMPO + Rred) = 1.42 × 1010 M-1 sec-1, where Rred = H + e-aq. The radicals HO2 and O-2 do not attack TANO and TEMPO, at least as far as the NO group of these molecules is concerned. © 1981.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Radiation Physics and Chemistry	en
dc.identifier.isi	ISI:A1981LF03800009	en
dc.identifier.volume	17	en
dc.identifier.issue	2	en
dc.identifier.spage	119	en
dc.identifier.epage	121	en