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Article: Fluorene trimers with various 9,9′-substituents: The synthesis, characteristics, condensed state structures, and electroluminescence properties

TitleFluorene trimers with various 9,9′-substituents: The synthesis, characteristics, condensed state structures, and electroluminescence properties
Authors
KeywordsOligomers
Organic electroluminescence
Fluorene
Issue Date2008
Citation
Organic Electronics: physics, materials, applications, 2008, v. 9, n. 2, p. 241-252 How to Cite?
AbstractThe four fluorene-based trimers with various aromatic and alkyl substituents (T1-T4) are synthesized and characterized. These oligomers show the similar electronic absorption and emission characteristics (e.g., absorption peak at 351 nm, and highly efficient deep blue emission at 394 nm in solution), indicating that the major electronic properties of the core chromophore are essentially independent of the substituents. However, the condensed state structures and thermal properties of four trimers are found to be different from each other, from crystalline (full alkyl (T1) or full aromatic (T2) substituted trimers) to amorphous (mixed aromatic and alkyl (T4) substituted trimers). The effect of different condensed state structures on electroluminescence device properties is presented: The blue light-emitting devices with accordant structure of ITO/PEDOT:PSS/TCTA (40 nm)/trimers (40 nm)/BCP (10 nm)/Alq3 (20 nm)/LiF/Al exhibit different EL efficiency (2.9% of T2, 1.8% of T3 and 2.7% of T4). Using amorphous T4, the white light-emitting device of ITO/TCTA (40 nm)/rubrene (0.1 nm)/T4 (8 nm)/Alq3(52 nm)/LiF/Al is fabricated with high efficiency (6.15 cd A-1), high brightness (9500 cd m-2) and good white light CIE coordinates (0.32, 0.37). © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/225881
ISSN
2015 Impact Factor: 3.471
2015 SCImago Journal Rankings: 1.215

 

DC FieldValueLanguage
dc.contributor.authorTang, Shi-
dc.contributor.authorLiu, Meirong-
dc.contributor.authorLu, Ping-
dc.contributor.authorCheng, Gang-
dc.contributor.authorZeng, Ming-
dc.contributor.authorXie, Zengqi-
dc.contributor.authorXu, Hai-
dc.contributor.authorWang, Huiping-
dc.contributor.authorYang, Bing-
dc.contributor.authorMa, Yuguang-
dc.contributor.authorYan, Donghang-
dc.date.accessioned2016-05-23T02:22:03Z-
dc.date.available2016-05-23T02:22:03Z-
dc.date.issued2008-
dc.identifier.citationOrganic Electronics: physics, materials, applications, 2008, v. 9, n. 2, p. 241-252-
dc.identifier.issn1566-1199-
dc.identifier.urihttp://hdl.handle.net/10722/225881-
dc.description.abstractThe four fluorene-based trimers with various aromatic and alkyl substituents (T1-T4) are synthesized and characterized. These oligomers show the similar electronic absorption and emission characteristics (e.g., absorption peak at 351 nm, and highly efficient deep blue emission at 394 nm in solution), indicating that the major electronic properties of the core chromophore are essentially independent of the substituents. However, the condensed state structures and thermal properties of four trimers are found to be different from each other, from crystalline (full alkyl (T1) or full aromatic (T2) substituted trimers) to amorphous (mixed aromatic and alkyl (T4) substituted trimers). The effect of different condensed state structures on electroluminescence device properties is presented: The blue light-emitting devices with accordant structure of ITO/PEDOT:PSS/TCTA (40 nm)/trimers (40 nm)/BCP (10 nm)/Alq3 (20 nm)/LiF/Al exhibit different EL efficiency (2.9% of T2, 1.8% of T3 and 2.7% of T4). Using amorphous T4, the white light-emitting device of ITO/TCTA (40 nm)/rubrene (0.1 nm)/T4 (8 nm)/Alq3(52 nm)/LiF/Al is fabricated with high efficiency (6.15 cd A-1), high brightness (9500 cd m-2) and good white light CIE coordinates (0.32, 0.37). © 2007 Elsevier B.V. All rights reserved.-
dc.languageeng-
dc.relation.ispartofOrganic Electronics: physics, materials, applications-
dc.subjectOligomers-
dc.subjectOrganic electroluminescence-
dc.subjectFluorene-
dc.titleFluorene trimers with various 9,9′-substituents: The synthesis, characteristics, condensed state structures, and electroluminescence properties-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.orgel.2007.10.010-
dc.identifier.scopuseid_2-s2.0-39249083493-
dc.identifier.volume9-
dc.identifier.issue2-
dc.identifier.spage241-
dc.identifier.epage252-

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