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Synthesis of High-Triplet-Energy Host Polymer for Blue and White Electrophosphorescent Light-Emitting Diodes
Alternative TitleMacromolecules
Xu, Fei1,2,5; Kim, Ji-Hoon1,2; Kim, Hee Un1,2; Jang, Jae-Ho1,2; Yook, Kyoung Soo3,4; Lee, Jun Yeob3,4; Hwang, Do-Hoon1,2
2014-11-11
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume47Issue:21Pages:7397-7406
AbstractA high-triplet-energy host polymer consisting of 9-(4-(bis(9-(2-ethylhexyl)-9H-carbazol-3-yl)methyl)phenyl)-9H-carbazole and tetraphenylsilane units was designed and synthesized. The triplet energy (2.67 eV) is one of the highest values reported for conjugated polymer hosts. Suitable highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels of -5.61 and -2.24 eV, respectively, were also observed. Blue phosphorescent polymers were obtained by introducing bis[2-(4,6-difluorophenyl)pyridinato-N,C-2']iridium(III) picolinate (FIrpic) into the host polymer while white phosphorescent polymers were synthesized by introducing red emissive bis[2-phenylquinoline-N,C-2']iridium(III) picolinate ((Phq)(2)Irpic) into the blue phosphorescent one. Polymer light-emitting devices with the configuration ITO/PEDOT:PSS/PVK/EML/TSPO1/LiF/Al [ITO, indium tin oxide; PEDOT, poly(3,4-ethylenedioxythiophene); PSS, poly(styrenesulfonic acid); PVK, poly(N-vinylcarbazole); EML, the emitting layer was composed of polymer or polymer and 1,3-bis[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]benzene (OXD-7) in a doping ratio of 2:1); TSPO1, diphenylphosphine oxide-4-(triphenylsilyl)pheny] were subsequently fabricated. Efficient energy transfer from the host polymer to the blue and red iridium(III) complexes was observed owing to the high triplet energy of the host. One of the fabricated blue phosphorescent devices had a maximum luminous efficiency of 3.57 cd/A.; A high-triplet-energy host polymer consisting of 9-(4-(bis(9-(2-ethylhexyl)-9H-carbazol-3-yl)methyl)phenyl)-9H-carbazole and tetraphenylsilane units was designed and synthesized. The triplet energy (2.67 eV) is one of the highest values reported for conjugated polymer hosts. Suitable highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels of -5.61 and -2.24 eV, respectively, were also observed. Blue phosphorescent polymers were obtained by introducing bis[2-(4,6-difluorophenyl)pyridinato-N,C-2']iridium(III) picolinate (FIrpic) into the host polymer while white phosphorescent polymers were synthesized by introducing red emissive bis[2-phenylquinoline-N,C-2']iridium(III) picolinate ((Phq)(2)Irpic) into the blue phosphorescent one. Polymer light-emitting devices with the configuration ITO/PEDOT:PSS/PVK/EML/TSPO1/LiF/Al [ITO, indium tin oxide; PEDOT, poly(3,4-ethylenedioxythiophene); PSS, poly(styrenesulfonic acid); PVK, poly(N-vinylcarbazole); EML, the emitting layer was composed of polymer or polymer and 1,3-bis[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]benzene (OXD-7) in a doping ratio of 2:1); TSPO1, diphenylphosphine oxide-4-(triphenylsilyl)pheny] were subsequently fabricated. Efficient energy transfer from the host polymer to the blue and red iridium(III) complexes was observed owing to the high triplet energy of the host. One of the fabricated blue phosphorescent devices had a maximum luminous efficiency of 3.57 cd/A.
KeywordEther Phosphine Oxide) Iridium Complexes Main-chain High-efficiency Polyfluorene Copolymers Conjugated Backbone Devices Level Electroluminescence Performance
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1021/ma5015929
URL查看原文
Indexed BySCI
Language英语
WOS KeywordETHER PHOSPHINE OXIDE) ; IRIDIUM COMPLEXES ; MAIN-CHAIN ; HIGH-EFFICIENCY ; POLYFLUORENE COPOLYMERS ; CONJUGATED BACKBONE ; DEVICES ; LEVEL ; ELECTROLUMINESCENCE ; PERFORMANCE
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
WOS IDWOS:000344905800016
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11861
Collection研究所(批量导入)
Affiliation1.Pusan Natl Univ, Dept Chem, Pusan 609735, South Korea
2.Pusan Natl Univ, Chem Inst Funct Mat, Pusan 609735, South Korea
3.Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi, South Korea
4.Dankook Univ, Ctr Photofunct Energy Mat, Yongin 448701, Gyeonggi, South Korea
5.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xu, Fei,Kim, Ji-Hoon,Kim, Hee Un,et al. Synthesis of High-Triplet-Energy Host Polymer for Blue and White Electrophosphorescent Light-Emitting Diodes[J]. MACROMOLECULES,2014,47(21):7397-7406.
APA Xu, Fei.,Kim, Ji-Hoon.,Kim, Hee Un.,Jang, Jae-Ho.,Yook, Kyoung Soo.,...&Hwang, Do-Hoon.(2014).Synthesis of High-Triplet-Energy Host Polymer for Blue and White Electrophosphorescent Light-Emitting Diodes.MACROMOLECULES,47(21),7397-7406.
MLA Xu, Fei,et al."Synthesis of High-Triplet-Energy Host Polymer for Blue and White Electrophosphorescent Light-Emitting Diodes".MACROMOLECULES 47.21(2014):7397-7406.
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