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dc.contributor.authorYeh, Huan-Chien_US
dc.contributor.authorChien, Chen-Hanen_US
dc.contributor.authorShih, Ping-Ien_US
dc.contributor.authorYuan, Mao-Chuanen_US
dc.contributor.authorShu, Ching-Fongen_US
dc.date.accessioned2014-12-08T15:11:22Z-
dc.date.available2014-12-08T15:11:22Z-
dc.date.issued2008-06-10en_US
dc.identifier.issn0024-9297en_US
dc.identifier.urihttp://dx.doi.org/10.1021/ma800391een_US
dc.identifier.urihttp://hdl.handle.net/11536/8721-
dc.description.abstractWe have synthesized two fluorene-based polymeric host materials, P1 and P2, through palladium-catalyzed Suzuki couplings of monomers containing tetraphenylsilane and 3,6-disubstituted fluorene frameworks, respectively. The resultant copolymers exhibited high glass transition temperatures (T-g >= 215 degrees C) and excellent thermal stability. The conjugation lengths of polymers P1 and P2 were effectively confined through the presence of the 3,6-linkages and silane units in the polymer skeleton. The structural features endowed these copolymers with UV-violet emissions in the solid state, together with high triplet energies (E-T = 2.60 eV), which were sufficiently high for PI and P2 to serve as appropriate hosts for green-emitting phosphors. In the case of polymer P2, the incorporation of pendent carbazole groups increased the HOMO level markedly and balanced the rates of charge injection and transportation. Employing P2 doped with green-emitting fac-tris(2-phenylpyridine)iridium as the emissive layer, we fabricated highly efficient polymer light-emitting diodes (32 cd/A, 9.2%) that exhibited significantly enhanced EL performance relative to that of the system employing P1 (14.5 cd/A, 4.2%).en_US
dc.language.isoen_USen_US
dc.titlePolymers derived from 3,6-fluorene and tetraphenylsilane derivatives: Solution-processable host materials for green phosphorescent OLEDsen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/ma800391een_US
dc.identifier.journalMACROMOLECULESen_US
dc.citation.volume41en_US
dc.citation.issue11en_US
dc.citation.spage3801en_US
dc.citation.epage3807en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000256393500014-
dc.citation.woscount38-
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