Category: 2657-87-6

Chen, Yung-Chung;Hsiao, Sheng-Huei;Wu, Cheng-Hsin published 《Thermally stable and organosoluble poly(amide-imide)s based on the imide ring-preformed dicarboxylic acids derived from 3,4′-oxydianiline with trimellitic anhydride and 6FDA》 in 2017. The article was appeared in 《Journal of Macromolecular Science, Part A: Pure and Applied Chemistry》. They have made some progress in their research.Product Details of 2657-87-6 The article mentions the following:

A diimide-dicarboxylic acid (DIDA) was prepared from the condensation reaction of trimellitic anhydride (TMA) and 3,4′-oxydianiline (3,4′-ODA) in a 2:1 molar ratio, and another new tetraimide-dicarboxylic acid (TIDA) was synthesized by condensation from 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), TMA, and 3,4′-ODA in a 1:2:2 molar ratio. Two series of aromatic poly(amide-imide)s (PAI) and were synthesized by Yamazaki phosphorylation polyamidation reactions of DIDA and TIDA, resp., with various aromatic diamines. Due to highly random segmental sequence for both series in the polymer chain and the incorporation of 6FDA moieties for the series, all the polymers were readily soluble in many organic solvents and could be casted into transparent, flexible, and tough films with good mech. properties. Glass-transition temperature (T_gs) of the series and series were recorded in the range of 242-274°C and 264-295°C. In addition, almost all the polymers showed 10% weight loss temperatures higher than 500°C under a nitrogen or an air atm. 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 lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Product Details of 2657-87-6Ethers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds.

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

Formula: C12H12N2O《Synthesis of novel mono- and bis-Schiff bases of morpholine derivatives and the investigation of their antimalarial and antiproliferative activities》 was published in 2015. The authors were Jarrahpour, Aliasghar;Shirvani, Pouria;Sharghi, Hashem;Aberi, Mahdi;Sinou, Veronique;Latour, Christine;Brunel, Jean Michel, and the article was included in《Medicinal Chemistry Research》. The author mentioned the following in the article:

A series of new Schiff bases of morpholine were prepared by the reaction of 2-hydroxy-3-(morpholinomethyl)benzaldehyde with several mono- and bis-aromatic amines. All these new compounds were characterized by ¹H-NMR, ¹³C-NMR and IR spectroscopy. They were evaluated as antimalarial agents against P. falciparum K14 strain demonstrating moderate to excellent activities. The IC₅₀ of 6,6′-((1,2-Phenylenebis(azanylylidene))bis(methanylylidene))bis(2-(morpholinomethyl)phenol) was 2.28 μM. Moreover, derivatives present potent antiproliferative activities against U937 leukemia-derived cell line with EC₅₀ values varying from 3 to 8 μM. Finally, due to its quite low cytotoxicity up to 10 μM against normal fibroblast cells, derivative 6,6′-((1,2-Phenylenebis(azanylylidene))bis(methanylylidene))bis(2-(morpholinomethyl)phenol) appeared as a good compromising biol. active product. 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. Formula: 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

Wang, Kai;Yuan, Xiaojie;Zhan, Maosheng published 《Comparison between microwave and thermal curing of a polyimide adhesive end-capped with phenylethynyl groups》 in 2017. The article was appeared in 《International Journal of Adhesion and Adhesives》. They have made some progress in their research.COA of Formula: C12H12N2O The article mentions the following:

Microwave energy was investigated to cure phenylethynyl-end-capped polyimide adhesive using an industrial microwave oven at a frequency of 2.45 GHz and the adhesive properties, thermal performance and curing mechanism for bonding stainless steel were evaluated. The results are compared with those of thermal cured samples. It was demonstrated that while the lap shear strength properties and thermal performance of microwave cured samples were almost as good as those cured via a thermal process, the microwave curing process resulted in a significant reduction in the process cycle time and power consumption. The Fourier transform IR (FTIR) spectroscopy and XPS anal. of the cured resin structures suggested that there was no obvious difference in the chem. reactions taking place during the microwave and the thermal cure processes.3-(4-Aminophenoxy)aniline (cas: 2657-87-6) were involved in the experimental procedure.

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. COA of Formula: C12H12N2OEthers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds.

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

Jin, Ke;Huang, Yuhui;Feng, Yudi;Guo, Jia;Xu, Jiangtao;Wang, Changchun published 《Soluble, Thermally Stable, and Low Thermal Expansion Polyarylamides Enabled by a Seven-Membered Carbocycle》. The research results were published in《ACS Applied Polymer Materials》 in 2020.Computed Properties of C12H12N2O The article conveys some information:

Soluble, thermally, and dimensionally stable polyarylamides have been a long-standing challenge for polymer chemists and materials scientists. Herein, we designed and synthesized a series of polyarylamides with various contents of the seven-membered carbocycle unit of 1,2:4,5-dibenzocycloheptadiene (DBCHD) as the linkage in the polymer backbones. In comparison to their analog with an ether linkage, these advanced polyarylamides showed improved thermal stability (5% weight loss temperature, 413-480°) and elevated glass transition temperatures (218-243°) depending on the content of the DBCHD unit. Given the good solubility in polar aprotic solvents, the polyarylamide films were prepared by simple and straightforward solution casting, which presented excellent optical transparency and low coefficient of thermal expansion (CTE). The polyarylamide with the highest content of DBCHD (43.5 wt %) showed a CTE value of 41.0 ppm/K in the temperature range of 0-150°, which is 43% lower than that of the corresponding ether-linked polyarylamide film. Variable-temperature ¹H NMR demonstrated that the nonplanar and moderately rigid structural features of DBCHD units in polymer backbones are the key influence factors that contribute to thermal stability and reduced thermal expansion. 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. Computed Properties 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

Recommanded Product: 2657-87-6《Novel polycondensation method of improving high-temperature properties of microheterogeneous rolivsan copolymers modified by inserting epoxy and imide bridges between spherical microdomains》 was published in 2017. The authors were Zaitsev, Boris A.;Shvabskaya, Irina D.;Kleptsova, Larisa G., and the article was included in《High Performance Polymers》. The author mentioned the following in the article:

Rolivsan thermosetting resins (ROLs) (low-viscosity solvent-free compositions including (di)vinylarom. ethers and thermosensitive (di)methacrylates) were modified by low amounts of polyfunctional compounds (epoxy resins (ERs) and aromatic diamines (DAs)). Thermochem. transformations in modified ROLs give novel glassy densely cross-linked copolymers with increased high-temperature strength and thermo-oxidative stability. It was revealed that copolymers obtained at different ROLs/ERs and ROLs/DA mixing ratios (which were varied over a wide range) and different heat treatment regimes have various compositions, cross-link densities, chem., topol., and morphol. structures. Structural features of these copolymers were studied by IR spectroscopy, dynamic mech., thermal, and elemental analyses; the temperature dependences of flexural strength were also obtained. Morphol. pattern of the cured ROLs is typical of microheterogeneous polymers where spherical highly cross-linked microdomains (polymer grains) with high T_g are weakly bound by less densely cross-linked defective (intergrain) polymer layers with lower T_g. On the basis of the data obtained in the studies of thermochem. transformations in ROLs/ERs and ROLs/DA blends, the new approach to improving thermal stability and heat resistance of thermosetting resins was developed. We suggest using intergrain layers in microheterogeneous cross-linked polymers as “microreactors” which include target polyfunctional compounds for various high-temperature polymerization and polycondensation reactions. 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. Recommanded Product: 2657-87-6 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

Choi, Young Chul;Kim, Min Su;Ryu, Kyoung Moon;Lee, Sang Hoon;Jeong, Young Gyu published 《Microstructures and electrothermal characterization of aromatic poly(azomethine ether)-derived carbon films》 in 2020. The article was appeared in 《Journal of Applied Polymer Science》. They have made some progress in their research.Application of 2657-87-6 The article mentions the following:

The authors report the microstructural evolution and electrothermal properties of aromatic poly(azomethine ether) (PAME)-derived C films, which were fabricated by a facile spin-coating and following carbonization at different temperatures of 300-1000°. For the purpose, poly[3-(4-nitrilophenoxy)phenylenenitrilomethine-1,3-phenylenemethine] (mPAME) with a high residue of ∼56.4% after carbonization at 1000° was synthesized for a polymeric precursor for C films. The XPS, Raman spectroscopy, and x-ray diffraction analyses revealed that the mol. structures of mPAME films changed into an intrinsically N-doped graphitic structure, dominantly at the carbonization temperatures of 800-1000°. The elec. conductivity increased considerably from ∼10^-7 S/cm, for mPAME-derived films fabricated at 300-700°, to ∼10⁰ S/cm for the film carbonized at 800° to ∼10¹ S/cm for the films carbonized at 900-1000°. Accordingly, mPAME-derived C films, which were carbonized at 900-1000°, exhibited excellent electrothermal performance, such as rapid temperature responsiveness, high maximum temperatures, and high elec. power efficiency to relatively low applied voltages of 5-13 V. The experimental procedure involved many compounds, such as 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. Application of 2657-87-6 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