Annihilation of the triplet excitons in the nanoporous glass matrices

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dc.contributor.authorAfanasyev, D.A.
dc.contributor.authorIbrayev, N.Kh.
dc.contributor.authorSaletsky, A.M.
dc.contributor.authorStarokurov, Y.V.
dc.contributor.authorGun'ko, V.M.
dc.contributor.authorMikhalovsky, S.V.
dc.creatorD.A., Afanasyev
dc.date.accessioned2018-01-04T09:03:38Z
dc.date.available2018-01-04T09:03:38Z
dc.date.issued2013-04-01
dc.description.abstractAbstract The spectra and kinetics of fluorescence decay of 1,2-benzanthracene (1,2-BA) molecular clusters adsorbed in nanoporous borosilicate glasses were investigated. It has been shown that the type of the decay kinetics of delayed fluorescence is determined by the annihilation of triplet excitons in crystalline and percolation clusters. The influence of an external magnetic field on the annihilation rate constant of triplet excitons in the adsorbed 1,2-BA molecules has been studied. The response of the molecular clusters to the magnetic field strongly depends on temperature, pore size and time scale of the observation. Clusters with the crystal structure dominate in the decay kinetics of triplet–triplet annihilation (TTA) and delayed fluorescence in the initial microsecond period of time after excitation. Amorphous clusters determine the form of decay kinetics of delayed fluorescence in the millisecond range. The increase in the pore size and concentration of the adsorbate lead to the dominance of crystalline components. The results presented here can be used to develop techniques for probing the structure of the adsorbed layer in nanoporous systems examining the effect of an external magnetic field on the annihilation delayed fluorescence (ADF) kinetics.en_US
dc.identifierDOI:10.1016/j.jlumin.2012.11.013
dc.identifier.citationD.A. Afanasyev, N.Kh. Ibrayev, A.M. Saletsky, Y.V. Starokurov, V.M. Gun'ko, S.V. Mikhalovsky, Annihilation of the triplet excitons in the nanoporous glass matrices, In Journal of Luminescence, Volume 136, 2013, Pages 358-364en_US
dc.identifier.issn00222313
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0022231312006758
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/3095
dc.language.isoenen_US
dc.publisherJournal of Luminescenceen_US
dc.relation.ispartofJournal of Luminescence
dc.rights.licenseCopyright © 2012 Elsevier B.V. All rights reserved.
dc.subjectDelayed fluorescenceen_US
dc.subjectTriplet–triplet annihilationen_US
dc.subjectMagnetic field effecten_US
dc.subjectPorous glassesen_US
dc.subjectMolecular clustersen_US
dc.titleAnnihilation of the triplet excitons in the nanoporous glass matricesen_US
dc.typeArticleen_US
elsevier.aggregationtypeJournal
elsevier.coverdate2013-04-01
elsevier.coverdisplaydateApril 2013
elsevier.endingpage364
elsevier.identifier.doi10.1016/j.jlumin.2012.11.013
elsevier.identifier.eid1-s2.0-S0022231312006758
elsevier.identifier.piiS0022-2313(12)00675-8
elsevier.identifier.scopusid84872297565
elsevier.openaccess0
elsevier.openaccessarticlefalse
elsevier.openarchivearticlefalse
elsevier.startingpage358
elsevier.teaserThe spectra and kinetics of fluorescence decay of 1,2-benzanthracene (1,2-BA) molecular clusters adsorbed in nanoporous borosilicate glasses were investigated. It has been shown that the type of the...
elsevier.volume136
workflow.import.sourcescience

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