1365272-12-3Relevant articles and documents
Iron oxide nanoparticles modified with carbon quantum nanodots for the stabilization of palladium nanoparticles: An efficient catalyst for the Suzuki reaction in aqueous media under mild conditions
Gholinejad, Mohammad,Seyedhamzeh, Mohammad,Razeghi, Mehran,Najera, Carmen,Kompany-Zareh, Mohsen
, p. 441 - 447 (2016)
Magnetic Fe3O4 nanoparticles (NPs) functionalized with carbon dots (C-dots) that contain carboxylic acid and hydroxyl groups were synthesized successfully and used for the reduction of PdII and the formation of Pd NPs. The new material was characterized by SEM, TEM, energy-dispersive spectroscopy, solid UV spectroscopy, vibrating sample magnetometry, XRD, and X-ray photoelectron spectroscopy and was used as a very efficient catalyst in the Suzuki-Miyaura cross-coupling reaction of aryl bromides and chlorides with arylboronic acids in aqueous media. Design of experiments indicates that the use of 0.22 mol % of Pd, K2CO3 as the base, and aqueous ethanol are the best reaction conditions. The reactions of aryl bromides take place at room temperature, and aryl chlorides react at 80 °C. The easily synthesized and air-stable catalyst Pd@C-dots@Fe3O4 NPs could be separated from the reaction mixture by using an external magnet and reused in eight consecutive runs with no significant loss of catalytic activity. Dot to dot: Pd supported on Fe3O4 nanoparticles modified with carbon quantum nanodots is shown to be an efficient catalyst for Suzuki coupling reactions.
Organic electroluminescent material and device
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Paragraph 0079-0082; 0103-0106, (2019/11/28)
The invention provides an organic electroluminescent material and an application thereof in a device. An organic compound is represented by a general formula (1) shown in the description as follows, wherein Ar1 is a group, obtained through removing n+1 H
A novel polymer containing phosphorus-nitrogen ligands for stabilization of palladium nanoparticles: An efficient and recyclable catalyst for Suzuki and Sonogashira reactions in neat water
Gholinejad,Hamed,Biji
, p. 14293 - 14303 (2015/08/24)
A new polymer containing phosphorus and nitrogen ligands was successfully synthesized, characterized and used for the stabilization of highly monodispersed palladium nanoparticles having an average diameter of 2-3 nm. The thermally stable heterogeneous catalyst was successfully applied in Suzuki-Miyaura and copper-free Sonogashira-Hagihara coupling reactions of aryl halides under low palladium loading conditions. Reactions were proceeded in neat water without using any organic co-solvents. The catalyst was successfully recycled for the sample Suzuki-Miyaura reaction nine consecutive times with small drop in catalytic activity.
