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3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Electric Literature of C12H12N2O The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Electric Literature of C12H12N2OIn 2015, Qu, Chunyan;Liu, Changwei;Zhou, Haoran;Yu, Weimiao;Wang, Dezhi;Wang, Dexin published 《One-step synthesis of PI@Fe3O4 composite microspheres and practical applications in Cu(II) ion adsorption》. 《RSC Advances》published the findings. The article contains the following contents:

Polyimide(PI)@magnetite(Fe3O4) composite microspheres have been successfully synthesized from poly(amic acid) triethylamine salts (PAAS) and Fe(III) ions by a facile one-step solvothermal process. Furthermore, the formation mechanism of the PI@Fe3O4 composite microspheres has been investigated. The morphol. and structure of the samples were both characterized by SEM, transmission electron microscopy (TEM), X-ray diffraction (XRD) and IR spectroscopy (IR). The results obtained show that the surface of magnetite could be successfully coated with polyimide and the coating could permeate throughout the crystals via a self-assembly process. The size of the composite microspheres was found to increase upon increasing the concentration of PAAS. The thermal properties of the composite microspheres were studied via thermogravimetric anal. (TGA) and the magnetic properties were determined by a vibrating sample magnetometer (VSM). Even though the saturation magnetization of the PI@Fe3O4 composite microspheres is lower than that of pure Fe3O4, the microspheres coated with PI exhibit an increased stability. In addition, basic hydrolysis of the composite microspheres has been carried out and the Cu(II)-adsorption properties of the composite microspheres before and after hydrolysis have been investigated. In doing so, it could be determined that the adsorption capacity of hydrolyzed composite microspheres increases from 5.84 mg g-1 to 24.63 mg g-1. To complete the study, the researchers used 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) .

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Electric Literature of C12H12N2O The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem