Tetraphenylsilane derivatives spiro-annulated by triphenylamine/carbazole with enhanced HOMO energy levels and glass transition temperatures without lowering triplet energy: host materials for efficient blue phosphorescent OLEDs
文献类型：期刊论文
| 作者 | Fan, Cong1; Chen, Yonghua2; Liu, Zhongyin1; Jiang, Zuoquan1; Zhong, Cheng1; Ma, Dongge2; Qin, Jingui1; Yang, Chuluo1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:3页码:463-469 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c2tc00082b |
| 英文摘要 | Two new host materials, SiBSTPA and SiBSCz, were designed and synthesized based on 4,4'-bis(triphenylsilyl)-biphenyl (BSB). Their thermal, electrochemical, electronic absorption and photoluminescent properties were fully investigated. The introduction of spiro-annulated triphenylamine/carbazole moieties on 4,4'-bis(triphenylsilyl)-biphenyl (BSB) increases the HOMO energy levels from -6.49 eV (BSB) to -5.30 eV for SiBSTPA and -5.56 eV for SiBSCz, and accordingly facilitates hole injection from the nearby hole-transporting layer. Compared to 4,4'-bis(triphenylsilyl)-biphenyl (BSB), higher glass transition temperatures (T-g) were observed at 133 degrees C for SiBSTPA and 129 degrees C for SiBSCz, owing to the rigid spiro-annulated structures. Meanwhile, the perpendicular conformation between the triphenylamine or carbazole plane and the biphenyl plane effectively prevents the extension of the pi-conjugation and consequently causes no depreciation of their triplet energies (ca. 2.75 eV). Phosphorescent organic light-emitting devices (PhOLEDs) with the following configuration: ITO/NPB/TCTA/EML/TAZ/LiF/Al were fabricated by using the two host materials and the blue emitter bis[2-(4',6'-difluorophenyl) pyridinato-N,C-2']iridium(III) picolate (FIrpic) as the guest. These devices exhibited good performance with the maximum current efficiency of 21.4 cd A(-1) and the maximum power efficiency of 15.6 lm W-1. |
| 语种 | 英语 |
| WOS记录号 | WOS:000314802200014 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46755]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Fan, Cong |
| 作者单位 | 1.Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Cong,Chen, Yonghua,Liu, Zhongyin,et al. Tetraphenylsilane derivatives spiro-annulated by triphenylamine/carbazole with enhanced HOMO energy levels and glass transition temperatures without lowering triplet energy: host materials for efficient blue phosphorescent OLEDs[J]. JOURNAL OF MATERIALS CHEMISTRY C,2013,1(3):463-469. |
| APA | Fan, Cong.,Chen, Yonghua.,Liu, Zhongyin.,Jiang, Zuoquan.,Zhong, Cheng.,...&Yang, Chuluo.(2013).Tetraphenylsilane derivatives spiro-annulated by triphenylamine/carbazole with enhanced HOMO energy levels and glass transition temperatures without lowering triplet energy: host materials for efficient blue phosphorescent OLEDs.JOURNAL OF MATERIALS CHEMISTRY C,1(3),463-469. |
| MLA | Fan, Cong,et al."Tetraphenylsilane derivatives spiro-annulated by triphenylamine/carbazole with enhanced HOMO energy levels and glass transition temperatures without lowering triplet energy: host materials for efficient blue phosphorescent OLEDs".JOURNAL OF MATERIALS CHEMISTRY C 1.3(2013):463-469. |
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来源：化学研究所
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