Unsymmetrical dendrimers as highly efficient light-emitting materials: Synthesis, photophysics, and electroluminescence
文献类型：期刊论文
| 作者 | Zhang, Hengjun1,2; Xu, Xinjun1,2; Qiu, Wenfeng1; Qi, Ting1,2; Gao, Xike1,2; Liu, Ying1,2; Lu, Kun1,2; Du, Chunyan1,2; Yu, Gui1; Liu, Yunqi1 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2008-08-28 |
| 卷号 | 112期号:34页码:13258-13263 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/jp801613v |
| 英文摘要 | Highly efficient light-emitting materials can be archived by a rational design that involves rigid dendron and pi-conjugated chromophores. This strategy is exemplified by three unsymmetrical dendrimers 5-(2',3',4',5'-tetraphenyl)phenyl-5'-(9- anthracenyl)-2,2'-bithiophene (1), 5-(2',3',4',5'-tetraphenyl)phenyl-5'-(1-pyrenyl)2,2' -bithiophene (2), and 5-(2'.3',4'.5'-tetraphenyl)phenyl-5'-(1-pyrenylethynyl)-2.2'- bithiophene (3). Thermogravimetric analysis and differential scanning calorimetry suggest that unsymmetrical dendrimers 1 and 2 have good thermal stability (>400 degrees C) and high glass transition temperature (> 130 degrees C) which make them promising candidates for highly stable organic light-emitting devices. The comparative study on their UV-vis absorption and fluorescence spectra in Solution and as thin films indicates that the unsymmetrical dendrimers can form intermolecular pi-pi stacking in the solid state. Electroluminescence (EL) devices using them as en-litters were made, and it was found that they emit intense green light, and the maximum luminance was 8659 cd/m(2) at 13.5 V with a maximum efficiency of 4.9 cd/A for 1. The further comparative study on the EL performance of 1-3, combined with their single crystal structures, demonstrated that with felicitously chosen pi-conjugated chromophores and better control of the space between the chromophore and dendron highly efficient light-emitting materials will be realized. |
| 语种 | 英语 |
| WOS记录号 | WOS:000258633600032 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/63399]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Yunqi |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Organ Solids, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Hengjun,Xu, Xinjun,Qiu, Wenfeng,et al. Unsymmetrical dendrimers as highly efficient light-emitting materials: Synthesis, photophysics, and electroluminescence[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(34):13258-13263. |
| APA | Zhang, Hengjun.,Xu, Xinjun.,Qiu, Wenfeng.,Qi, Ting.,Gao, Xike.,...&Liu, Yunqi.(2008).Unsymmetrical dendrimers as highly efficient light-emitting materials: Synthesis, photophysics, and electroluminescence.JOURNAL OF PHYSICAL CHEMISTRY C,112(34),13258-13263. |
| MLA | Zhang, Hengjun,et al."Unsymmetrical dendrimers as highly efficient light-emitting materials: Synthesis, photophysics, and electroluminescence".JOURNAL OF PHYSICAL CHEMISTRY C 112.34(2008):13258-13263. |
入库方式： OAI收割
来源：化学研究所
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