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dc.contributor.authorShunichi Fukuzumi-
dc.contributor.authorKenneth D. Karlin-
dc.date.accessioned2016-08-28T10:08:21Z-
dc.date.available2016-08-28T10:08:21Z-
dc.date.issued2012-
dc.identifier.issn1463-9076-
dc.identifier.otherOAK-8931-
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/222773-
dc.description.abstractThe catalytic durability of an organic photocatalyst, 9-mesityl-10-methyl acridinium ion (Acr +-Mes), has been dramatically improved by the addition of [{tris(2-pyridylmethyl)amine}Cu II](ClO 4) 2 ([(tmpa)Cu II] 2+) in the photocatalytic oxygenation of p-xylene by molecular oxygen in acetonitrile. Such an improvement is not observed by the addition of Cu(ClO 4) 2 in the absence of organic ligands. The addition of [(tmpa)Cu] 2+ in the reaction solution resulted in more than an 11 times higher turnover number (TON) compared with the TON obtained without [(tmpa)Cu II] 2+. In the photocatalytic oxygenation, a stoichiometric amount of H 2O 2 formation was observed in the absence of [(tmpa)Cu II] 2+, however, much less H 2O 2 formation was observed in the presence of [(tmpa)Cu II] 2+. The photocatalytic mechanism was investigated by laser flash photolysis measurements in order to detect intermediates. The reaction of O 2 - with [(tmpa)Cu II] 2+ monitored by UV-vis spectroscopy in propionitrile at 203 K suggested formation of [{(tmpa)Cu II} 2O 2] 2+, a transformation which is crucial for the overall 4-electron reduction of molecular O 2 to water, and a key in the observed improvement in the catalytic durability of Acr +-Mes. This journal is © the Owner Societies.-
dc.languageEnglish-
dc.titleImprovement of durability of an organic photocatalyst in p-xylene oxygenation by addition of a Cu(ii) complex-
dc.typeArticle-
dc.relation.issue27-
dc.relation.volume14-
dc.relation.indexSCI-
dc.relation.indexSCIE-
dc.relation.indexSCOPUS-
dc.relation.startpage9654-
dc.relation.lastpage9659-
dc.relation.journaltitlePhysical Chemistry Chemical Physics-
dc.identifier.doi10.1039/c2cp41207a-
dc.identifier.wosidWOS:000305581500015-
dc.identifier.scopusid2-s2.0-84862901501-
dc.author.googleYamada Y.-
dc.author.googleMaeda K.-
dc.author.googleOhkubo K.-
dc.author.googleKarlin K.D.-
dc.author.googleFukuzumi S.-
dc.contributor.scopusidShunichi Fukuzumi(35430038100;57375583300)-
dc.date.modifydate20220119145616-
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자연과학대학 > 화학·나노과학전공 > Journal papers
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