3379-38-2Relevant articles and documents
Thermally activated delayed fluorescence material for locking triphenylphosphine oxide receptor based on ether bond conformation
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Paragraph 0029; 0034-0035, (2020/03/05)
The invention discloses a thermally activated delayed fluorescence material for locking a triphenylphosphine oxide receptor based on ether bond conformation. The material has a structure as shown in aformula which is described in the specification. The thermally activated delayed fluorescence material has very good blue light or green light color purity, very high luminous quantum efficiency andcharge injection/transmission performance, and is applicable as a luminescent material for preparation of a high-performance organic electroluminescent device; in addition, the blue light-emitting material also has a very high excited state energy level, and can be used as a host material for preparing a high-performance organic light-emitting device.
Interface Engineering in Two-Dimensional Heterostructures: Towards an Advanced Catalyst for Ullmann Couplings
Sun, Xu,Deng, Haitao,Zhu, Wenguang,Yu, Zhi,Wu, Changzheng,Xie, Yi
supporting information, p. 1704 - 1709 (2016/02/03)
The design of advanced catalysts for organic reactions is of profound significance. During such processes, electrophilicity and nucleophilicity play vital roles in the activation of chemical bonds and ultimately speed up organic reactions. Herein, we demonstrate a new way to regulate the electro- and nucleophilicity of catalysts for organic transformations. Interface engineering in two-dimensional heteronanostructures triggered electron transfer across the interface. The catalyst was thus rendered more electropositive, which led to superior performance in Ullmann reactions. In the presence of the engineered 2D Cu2S/MoS2 heteronanostructure, the coupling of iodobenzene and para-chlorophenol gave the desired product in 92 % yield under mild conditions (100 °C). Furthermore, the catalyst exhibited excellent stability as well as high recyclability with a yield of 89 % after five cycles. We propose that interface engineering could be widely employed for the development of new catalysts for organic reactions.
Ligand-free highly effective iron/copper co-catalyzed formation of dimeric aryl ethers or sulfides
Qu, Xiaoming,Li, Tingyi,Zhu, Yan,Sun, Peng,Yang, Hailong,Mao, Jincheng
supporting information; experimental part, p. 5043 - 5046 (2011/08/22)
Highly selective coupling of diiodoarenes with phenols or phenthiols can be performed by using a low-cost, benign character and readily available Fe/Cu catalytic system in the absence of ligands. It is noteworthy that the desired dimeric aryl ethers or sulfides could be obtained in high yields by coupling between diiodoarenes and phenols, or diphenols with aryl iodides. The Royal Society of Chemistry 2011.