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 C ; Chen YH ; Liu ZY ; Jiang ZQ ; Zhong C ; Ma DG ; Qin JG ; Yang CL |
| 刊名 | journal of materials chemistry c
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:3页码:463-469 |
| 关键词 | LIGHT-EMITTING-DIODES ORGANIC ELECTROLUMINESCENT DEVICES ELECTRON-TRANSPORT MATERIALS BIPOLAR HOST ELECTROPHOSPHORESCENT DEVICES BENZIMIDAZOLE DERIVATIVES IRIDIUM COMPLEXES MAIN-CHAIN GREEN MOLECULES |
| ISSN号 | 2050-7526 |
| 通讯作者 | fan c |
| 中文摘要 | 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. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000314802200014 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50375]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Fan C,Chen YH,Liu ZY,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 C.,Chen YH.,Liu ZY.,Jiang ZQ.,Zhong C.,...&Yang CL.(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 C,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. |
入库方式： OAI收割
来源：长春应用化学研究所
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