Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oligomers Based on Triphenylamine and Spiro(fluorene-9,9 '-xanthene)
文献类型：期刊论文
| 作者 | Chu Zeng-Ze; Wang Dan; Zhang Chao; Zou De-Chun |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 28期号:8页码:2000-2007 |
| 关键词 | Organic Light-emitting Diode Triphenylamine Star-burst Blue-emitting Material Spiro(Fluorene-9 9 '-xanthene) |
| ISSN号 | 1000-6818 |
| DOI | 10.3866/PKU.WHXB201206071 |
| 英文摘要 | Three star-burst conjugated oligomers based on triphenylamine (TPA), fluorene and spiro (fluorene-9,9'-xanthene) (SEX) have been synthesized via the Sonogashira cross-coupling reaction. These well-defined oligomers possess high decomposition temperatures (T-d) at 417, 439, and 425 degrees C, respectively. Differential scanning calorimetry (DSC) demonstrates two oligomers which incorporate the SFX unit, TPA-SFX and TPA-SFXCz, possess higher glass transition temperatures (T-g) at 141 and 127 degrees C, respectively, compared with 101 degrees C for TPA-F. The investigation of their optical properties shows TPA-SFX and TPA-SFXCz exhibit a single blue emission in film with emission peaks at 434 and 442 nm, respectively, whereas TPA-F shows a broad double-peak emission located at 424 and 455 nm, which implies the nonplanar TPA and spiro SFX moieties can effectively restrict the formation of aggregates or excimers. Electrochemical investigations show that these oligomers have relatively high HOMO levels at around -5.4 eV due to incorporation of the electron-rich TPA core. Electroluminescence (EL) devices with a configuration of ITO (indium tin oxide)/PEDOT:PSS (poly(3,4-ethylenedioxythiophene): poly (styrenesulfonate))/oligomer/TPBI (1,3,5-tris(1-phenyl-1H -benzimidazol-2-yl)benzene)/LiF/Al were constructed using these oligomers as the emitter by spin-coating, with TPBI as the electron-transporting and hole-blocking layer. The device using TPA-SFX as the emitting layer exhibits bright blue emission with the maximum brightness and maximum current efficiency of 2680 cd . A(-2) and 0.35 cd . A(-1), and CIE. color coordination of (0.17, 0.13). |
| 语种 | 英语 |
| WOS记录号 | WOS:000307486200029 |
| 出版者 | PEKING UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49711]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zou De-Chun |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu Zeng-Ze,Wang Dan,Zhang Chao,et al. Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oligomers Based on Triphenylamine and Spiro(fluorene-9,9 '-xanthene)[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(8):2000-2007. |
| APA | Chu Zeng-Ze,Wang Dan,Zhang Chao,&Zou De-Chun.(2012).Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oligomers Based on Triphenylamine and Spiro(fluorene-9,9 '-xanthene).ACTA PHYSICO-CHIMICA SINICA,28(8),2000-2007. |
| MLA | Chu Zeng-Ze,et al."Synthesis and Optoelectronic Properties of Blue-Emitting Star-Burst Oligomers Based on Triphenylamine and Spiro(fluorene-9,9 '-xanthene)".ACTA PHYSICO-CHIMICA SINICA 28.8(2012):2000-2007. |
入库方式： OAI收割
来源：化学研究所
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