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Solution and surface photochemistry of fenarimol: a comparative study

2007Journal article Restricted
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dc.contributor.authorSilva, José P. da
dc.contributor.authorMateus, Maria Da Conceição
dc.contributor.authorSilva, Abílio M. da
dc.contributor.authorFerreira, Luís F. Vieira
dc.contributor.authorBurrows, Hugh D.
dc.date.accessioned2015-06-22T14:13:49Z
dc.date.available2015-06-22T14:13:49Z
dc.date.issued2007
dc.description.abstractThe photochemistry of the pesticide fenarimol was studied in methanol and on a cellulose surface. The ground state absorption and fluorescence spectra are similar in solution and at the solid/gas interface. Room temperature phosphorescence emission was observed in cellulose. Transient absorption of fenarimol and of its chromophoric units, chlorobenzene and pyrimidine, showed a common absorption band centered at 320 nm in methanol. An absorption band above 350 nm was observed only for fenarimol and was assigned to a recombination intermediate. On cellulose the transient absorption is broader and extends up to 600 nm. The main photodegradation pathway in methanol involves the homolytic cleavage of the bond to the pyrimidyl ring, followed by a fast in-cage recombination of the initially formed pyrimidine and ketyl radicals. On cellulose surfaces, dechlorination is also one of the important photodegradation pathways. (c) 2006 Elsevier B.V. All rights reserved.
dc.identifier.doihttps://dx.doi.org/10.1016/j.jphotochem.2006.08.018
dc.identifier.issn1010-6030
dc.identifier.otherAUT: MCM00289;
dc.identifier.urihttp://hdl.handle.net/10400.1/6552
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.isbasedonP-004-BRT
dc.subjectLaser flash photolysis
dc.subjectDiffuse reflectance
dc.subjectPhotodegradation products
dc.subjectChlorobenzene
dc.subjectPyrimidine
dc.titleSolution and surface photochemistry of fenarimol: a comparative study
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage282
oaire.citation.issue2-3
oaire.citation.startPage278
oaire.citation.titleJournal of Photochemistry and Photobiology A: Chemistry
oaire.citation.volume186
person.familyNameDa Silva
person.familyNameMateus
person.givenNameJosé Paulo
person.givenNameMaria da Conceição
person.identifier.ciencia-id3413-C4F4-73F7
person.identifier.orcid0000-0002-6458-7328
person.identifier.orcid0000-0002-3021-809X
person.identifier.ridA-4606-2008
person.identifier.ridE-3359-2012
person.identifier.scopus-author-id7201733236
person.identifier.scopus-author-id17341009800
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicatione2004fa2-a47d-44b0-b11c-fc95fe51cbf9
relation.isAuthorOfPublication624017ba-d78b-4dd3-9142-ae0d3a49d4db
relation.isAuthorOfPublication.latestForDiscoverye2004fa2-a47d-44b0-b11c-fc95fe51cbf9

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