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Benzoin type photoinitiator for free radical polymerization

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dc.contributor.authorEsen, Duygu Sevinc
dc.contributor.authorArsu, Nergis
dc.contributor.authorSilva, José P. da
dc.contributor.authorJockusch, Steffen
dc.contributor.authorTurro, Nicholas J.
dc.date.accessioned2015-06-22T14:13:51Z
dc.date.available2015-06-22T14:13:51Z
dc.date.issued2013
dc.description.abstractBenzoin, a popular photoinitiator for free radical polymerization of vinyl monomers, was improved by introduction of two methyl thioether substituents. This new benzoin derivative showed an about 50 times higher light absorption in the near-UV spectral region and performed better than the unsubstituted benzoin in polymerization experiments in bulk solutions or films of acrylate monomers when low initiator concentrations are used. Laser flash photolysis, low temperature luminescence experiments and photoproduct studies by mass spectrometry suggest that a slow -cleavage mechanism (k = 2.2 x 105 s1) from the electronic triplet state with a quantum yield of 0.1 is the primary photoreaction to generate the initiating free radicals. (c) 2013 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013, 51, 1865-1871
dc.identifier.doihttps://dx.doi.org/10.1002/pola.26569
dc.identifier.issn0887-624X
dc.identifier.urihttp://hdl.handle.net/10400.1/6570
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relation.isbasedonP-005-1KR
dc.subjectLaser flash photolysis
dc.subjectPhotoinitiator
dc.subjectPhotopolymerization
dc.subjectPhotochemistry
dc.subjectPhotophysics
dc.subjectRadical polymerization
dc.titleBenzoin type photoinitiator for free radical polymerization
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1871
oaire.citation.startPage1865
oaire.citation.titleJournal of Polymer Science Part A: Polymer Chemistry
oaire.citation.volume51
person.familyNameSilva
person.givenNameJosé Paulo da
person.identifier.ciencia-id3413-C4F4-73F7
person.identifier.orcid0000-0002-6458-7328
person.identifier.ridA-4606-2008
person.identifier.scopus-author-id7201733236
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicatione2004fa2-a47d-44b0-b11c-fc95fe51cbf9
relation.isAuthorOfPublication.latestForDiscoverye2004fa2-a47d-44b0-b11c-fc95fe51cbf9

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