76311-99-4Relevant academic research and scientific papers
A novel furo[3,2-: C] pyridine-based iridium complex for high-performance organic light-emitting diodes with over 30% external quantum efficiency
Yan, Zhimin,Wang, Yanping,Wang, Jiaxiu,Wang, Yue,Ding, Junqiao,Wang, Lixiang
, p. 10122 - 10125 (2017)
A novel furo[3,2-c]pyridine based Ir complex, namely (pfupy)2Ir(acac), has been developed by replacing sulfur with oxygen in the C^N ligand. Compared with the thiophene-containing (pthpy)2Ir(acac), the LUMO level is elevated while the HOMO level remains almost unchanged for the resultant furan-containing (pfupy)2Ir(acac). As a consequence, the emissive maximum is blue-shifted from 556 nm of (pthpy)2Ir(acac) to 538 nm of (pfupy)2Ir(acac) together with an improved photoluminescence quantum yield of 0.80. The corresponding device based on (pfupy)2Ir(acac) realizes a record-high external quantum efficiency (EQE) of 30.5% (110.5 cd A-1) without any out-coupling technology. Even at a luminance of 1000 and 5000 cd m-2, the EQE still remains at 26.6% (96.4 cd A-1) and 25.6% (92.7 cd A-1), respectively, indicative of the gentle efficiency roll-off. The results clearly demonstrate the great potential of furan-based functional materials applied in OLEDs.
Eucalyptol as bio-based solvent for Migita–Kosugi–Stille coupling reaction on O,S,N-heterocycle
Campos, Joana F.,Berteina-Raboin, Sabine
, p. 138 - 142 (2019/12/09)
We report herein an investigation on the use of eucalyptol as new solvent for organic transformations applied to the Migita-Kosugi-Stille palladium-catalyzed cross-coupling reaction. Heterocycles containing oxygen, sulfur and nitrogen were chosen as starting materials. Eucalyptol turned out to be a viable sustainable alternative to common solvents for this reaction.
ORGANIC METAL COMPOUND, ORGANIC LIGHT-EMITTING DEVICES EMPLOYING THE SAME
-
, (2017/07/26)
Organic metal compounds, and organic light-emitting devices employing the same are provided. The organic metal compound has a chemical structure represented by formula (I): wherein each R1 is independent and can be hydrogen, C1-12 al
Furopyridines, XXII [1]. Elaboration of the C-Substituents alpha to the Heteronitrogen Atom of Furo[2,3-b] -, -[3,2-6] -, -[2,3-c]- and -[3,2-c]pyridine
Shiotani, Shunsaku,Tanigochi, Katsunori
, p. 901 - 907 (2007/10/03)
The Grignard reaction of fused ring cyanopyridine derivatives 1a-d with methyl- and phenylmagnesium bromide yielded the corresponding acylpyridine compounds 2a-d and 3a-d. Furopyridine N-oxides 4a-d were converted into the compounds having a phenyl group at the α-position to the ring nitrogen 5a-d. Reduction of 1a-d and the carboxylic esters 6a-d with diisobutylaluminium hydride yielded the corresponding amines 7a-d and aldehydes 9a-d. The aldehydes were converted to nitroethanol derivatives 10a-d by condensation with nitromethane and acrylic ester compounds 11a-d by the Wittig-Horner reaction with methyl diethyl phosphonoacetate.
