A Series of Lithium Pyridyl Phenolate Complexes with a Pendant Pyridyl Group for Electron-Injection Layers in Organic Light-Emitting Devices
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- Tomoyuki Koganezawa
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
書誌事項
- 公開日
- 2017-11-13
- 資源種別
- journal article
- DOI
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- 10.1021/acsami.7b13550
- 公開者
- American Chemical Society (ACS)
この論文をさがす
説明
We report a new series of lithium pyridyl phenolate complexes with a pendant pyridyl group, Li2BPP, Li3BPP, and Li4BPP, in which the pendant pyridines are substituted at the 2-, 3-, and 4-positions, respectively. The most important difference between these complexes is their molecular planarity; Li3BPP and Li4BPP adopt twisted bipyridine structures, whereas Li2BPP adopts a planar structure owing to the steric hindrance and chelating effect of bipyridine on the Li core. The planar structure leads to crystallization through π-π stacking interactions, and the small differences in the molecular structures of the pendant pyridine rings cause drastic differences in the physical properties of thin solid films of these complexes. We applied these complexes as electron-injection layers (EILs) in Ir(ppy)
収録刊行物
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- ACS Applied Materials & Interfaces
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ACS Applied Materials & Interfaces 9 (46), 40541-40548, 2017-11-13
American Chemical Society (ACS)
