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Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/18179
DC FieldValueLanguage
dc.contributor.authorKang, Jihoon-
dc.contributor.authorJo, Jungho-
dc.contributor.authorJo, Youngeun-
dc.contributor.authorLee, Sun Young-
dc.contributor.authorKeivanidis, Panagiotis E.-
dc.contributor.authorWegner, Gerhard-
dc.contributor.authorYoon, Do Y.-
dc.date.accessioned2020-03-27T17:27:03Z-
dc.date.available2020-03-27T17:27:03Z-
dc.date.issued2008-12-08-
dc.identifier.citationPolymer, 2008, vol. 49, iss. 26, pp. 5700-5704en_US
dc.identifier.issn00323861-
dc.identifier.urihttps://hdl.handle.net/20.500.14279/18179-
dc.description.abstractWe report time-resolved photoluminescence (PL) spectroscopy study of solutions and thin films of pure penta-fluorenes with varying alkyl side-chain structures. While no low-energy green emissions were observed in solutions, spin-cast and vacuum dried initial films exhibited low-energy emission in time-delayed PL spectra, centered at 490 nm, whose intensity varied strongly with the side-chain structure. In comparison, the films annealed at 170 °C in air showed nearly identical low-energy emission in time-delayed PL spectra, centered at 520 nm, regardless of the side-chain structures. Therefore, our experimental results obtained for pure penta-fluorenes provided clear evidence that the mechanism of the green emission of oligofluorene and polyfluorene films includes both the intermolecular aggregate/excimer formation, emitted around 490 nm, and fluorenone-type chemical defects, emitted around 520 nm. © 2008 Elsevier Ltd. All rights reserved.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.relation.ispartofPolymeren_US
dc.rights© Elsevieren_US
dc.subjectPolyfluoreneen_US
dc.subjectOligofluoreneen_US
dc.subjectTime-resolved photoluminescenceen_US
dc.titleTime-resolved photoluminescence study of low-energy emission mechanisms in oligofluorene and polyfluorene filmsen_US
dc.typeArticleen_US
dc.collaborationSeoul National Universityen_US
dc.collaborationMax Planck Instituteen_US
dc.subject.categoryChemical Engineeringen_US
dc.journalsSubscriptionen_US
dc.countryGermanyen_US
dc.countryKorea (South)en_US
dc.subject.fieldEngineering and Technologyen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1016/j.polymer.2008.10.006en_US
dc.identifier.scopus2-s2.0-56349100605-
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/56349100605-
dc.relation.issue26en_US
dc.relation.volume49en_US
cut.common.academicyear2007-2008en_US
dc.identifier.spage5700en_US
dc.identifier.epage5704en_US
item.openairetypearticle-
item.cerifentitytypePublications-
item.fulltextNo Fulltext-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.languageiso639-1en-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.orcid0000-0002-5336-249X-
crisitem.author.parentorgFaculty of Engineering and Technology-
crisitem.journal.journalissn0032-3861-
crisitem.journal.publisherElsevier-
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