A versatile color tuning strategy for iridium(III) and platinum(II) electrophosphors by shifting the charge-transfer states with an electron-deficient core
文献类型：期刊论文
| 作者 | Zhou, Gui-Jiang1,2,3; Wang, Qi4; Wong, Wai-Yeung1,2; Ma, Dongge4; Wang, Lixiang4; Lin, Zhenyang5 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2009 |
| 卷号 | 19期号:13页码:1872-1883 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/b814507e |
| 英文摘要 | By fusing an electron-deficient ring system with the phenyl ring of a 2-phenylpyridine (ppy)-type ligand, a new and synthetically versatile strategy for the phosphorescence color tuning of cyclometalated iridium(III) and platinum(II) metallophosphors has been established. Two robust red electrophosphors with enhanced electron-injection/electron-transporting features were prepared by using an electron-trapping fluoren-9-one chromophore in the ligand design. The thermal, photophysical, redox and electrophosphorescent properties of these complexes are reported. These exciting results can be attributed to a switch of the metal-to-ligand charge-transfer (MLCT) character of the transition from the pyridyl groups in the traditional Ir(III) or Pt(II) ppy-type complexes to the electron-deficient ring core, and the spectral assignments corroborate well with the electrochemical data as well as the timedependent density functional theory (TD-DFT) calculations. The electron-withdrawing character of the fused ring results in much more stable MLCT states, inducing a substantial red-shift of the triplet emission energy from yellow to red for the Ir(III) complex and even green to red for the PtII counterpart. Electrophosphorescent organic light-emitting devices (OLEDs) doped with these red emitters fabricated by using vacuum evaporation technique have been realized with reasonable performance. |
| 语种 | 英语 |
| WOS记录号 | WOS:000264254500014 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/66397]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wong, Wai-Yeung |
| 作者单位 | 1.Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China 2.Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Kowloon Tong, Hong Kong, Peoples R China 3.Xi An Jiao Tong Univ, Dept Chem, Fac Sci, Xian 710049, Peoples R China 4.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 5.Hong Kong Univ Sci & Technol, Dept Chem, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Gui-Jiang,Wang, Qi,Wong, Wai-Yeung,et al. A versatile color tuning strategy for iridium(III) and platinum(II) electrophosphors by shifting the charge-transfer states with an electron-deficient core[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(13):1872-1883. |
| APA | Zhou, Gui-Jiang,Wang, Qi,Wong, Wai-Yeung,Ma, Dongge,Wang, Lixiang,&Lin, Zhenyang.(2009).A versatile color tuning strategy for iridium(III) and platinum(II) electrophosphors by shifting the charge-transfer states with an electron-deficient core.JOURNAL OF MATERIALS CHEMISTRY,19(13),1872-1883. |
| MLA | Zhou, Gui-Jiang,et al."A versatile color tuning strategy for iridium(III) and platinum(II) electrophosphors by shifting the charge-transfer states with an electron-deficient core".JOURNAL OF MATERIALS CHEMISTRY 19.13(2009):1872-1883. |
入库方式： OAI收割
来源：化学研究所
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