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Article: Iridium complex grafted to 3,6-carbazole-alt-tetraphenylsilane copolymers for blue electrophosphorescence
Title | Iridium complex grafted to 3,6-carbazole-alt-tetraphenylsilane copolymers for blue electrophosphorescence |
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Authors | |
Keywords | Host-guest systems Synthesis Phase separation Metal-polymer complexes |
Issue Date | 2010 |
Citation | Journal of Polymer Science, Part A: Polymer Chemistry, 2010, v. 48, n. 9, p. 1859-1865 How to Cite? |
Abstract | We designed a 3,6-dibromo-9-hexyl-9H-carbazole derivative with the blue emissive iridium complex bis[2-(4,6-difluorophenyl)pyridyl-N,C 2′](picolinato)iridium(III) (Flrpic) linked at the alkyl terminal. Based on this monomer, novel 3,6-carbazole-alt-tetraphenylsilane copolymers grafted with Flrpic were synthesized by palladium-catalyzed Suzuki coupling reaction, and the content of Flrpic in the polymers could be controlled by feed ratio of the monomers. The polymer films mainly show blue emission from Flrpic, and the emission intensity from the polymer backbones is much weaker compared with the doped analogues, which demonstrates an efficient energy transfer from polymeric host to covalently bonded guest. The phase separation in the polymers was suppressed, which can be identified by atomic force microscopy and designed electroluminescent (EL) devices. EL devices based on the polymers exhibited blue phosphorescence from Flrpic. The luminous efficiency of preliminary devices reached 2.3 cd/A, and the efficiency roll-off at high current densities was suppressed. © 2010 Wiley Periodicals, Inc. |
Persistent Identifier | http://hdl.handle.net/10722/225886 |
ISSN | 2021 Impact Factor: 2.869 2020 SCImago Journal Rankings: 0.768 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Teng, F. E I | - |
dc.contributor.author | Cheng, Gang | - |
dc.contributor.author | Dehua, H. U. | - |
dc.contributor.author | Dong, Wenyue | - |
dc.contributor.author | Ping, L. U. | - |
dc.contributor.author | Yuguang, Ma | - |
dc.date.accessioned | 2016-05-23T02:22:04Z | - |
dc.date.available | 2016-05-23T02:22:04Z | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Journal of Polymer Science, Part A: Polymer Chemistry, 2010, v. 48, n. 9, p. 1859-1865 | - |
dc.identifier.issn | 0887-624X | - |
dc.identifier.uri | http://hdl.handle.net/10722/225886 | - |
dc.description.abstract | We designed a 3,6-dibromo-9-hexyl-9H-carbazole derivative with the blue emissive iridium complex bis[2-(4,6-difluorophenyl)pyridyl-N,C 2′](picolinato)iridium(III) (Flrpic) linked at the alkyl terminal. Based on this monomer, novel 3,6-carbazole-alt-tetraphenylsilane copolymers grafted with Flrpic were synthesized by palladium-catalyzed Suzuki coupling reaction, and the content of Flrpic in the polymers could be controlled by feed ratio of the monomers. The polymer films mainly show blue emission from Flrpic, and the emission intensity from the polymer backbones is much weaker compared with the doped analogues, which demonstrates an efficient energy transfer from polymeric host to covalently bonded guest. The phase separation in the polymers was suppressed, which can be identified by atomic force microscopy and designed electroluminescent (EL) devices. EL devices based on the polymers exhibited blue phosphorescence from Flrpic. The luminous efficiency of preliminary devices reached 2.3 cd/A, and the efficiency roll-off at high current densities was suppressed. © 2010 Wiley Periodicals, Inc. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Polymer Science, Part A: Polymer Chemistry | - |
dc.subject | Host-guest systems | - |
dc.subject | Synthesis | - |
dc.subject | Phase separation | - |
dc.subject | Metal-polymer complexes | - |
dc.title | Iridium complex grafted to 3,6-carbazole-alt-tetraphenylsilane copolymers for blue electrophosphorescence | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/pola.23934 | - |
dc.identifier.scopus | eid_2-s2.0-77950789295 | - |
dc.identifier.volume | 48 | - |
dc.identifier.issue | 9 | - |
dc.identifier.spage | 1859 | - |
dc.identifier.epage | 1865 | - |
dc.identifier.eissn | 1099-0518 | - |
dc.identifier.isi | WOS:000277017800002 | - |
dc.identifier.issnl | 0887-624X | - |