Category: 2657-87-6

Hasegawa, Masatoshi;Fujii, Mari;Wada, Yuriko published 《Approaches to improve the film ductility of colorless cycloaliphatic polyimides》 in 2018. The article was appeared in 《Polymers for Advanced Technologies》. They have made some progress in their research.Application In Synthesis of 3-(4-Aminophenoxy)aniline The article mentions the following:

This study described approaches for improving the film ductility of colorless cycloaliphatic polyimides (PIs). An unexpected toughening effect was observed when a PI derived from pyromellitic dianhydride (PMDA) and 4,4′-methylenebis(cyclohexylamine) was modified by copolymerization with a low isophoronediamine (IPDA) content of 5 to 30 mol%, despite there being no film-forming ability in the homo PMDA/IPDA system. For example, at an IPDA content of 20 mol%, the copolymer showed significantly improved film toughness (maximum elongation at break, ε_b max = 57%), excellent optical transparency (light transmittance at 400 nm, T₄₀₀ = 83.7%), and a high glass transition temperature (T_g = 317°C). This toughening effect can be interpreted on the basis of the concept of chain slippage. In this study, the PIs derived from bicyclo[2.2.2]octane-2,3,5,6-tetracarboxylic dianhydride (H-BTA) with various diamines were also systematically investigated to evaluate the potential of H-BTA-derived systems. The combinations of H-BTA with ether-containing diamines led to highly tough PI films (ε_b max > 100%) with very high T_gs, strongly contrasting with the results of an earlier study. The observed excellent properties are related to the steric structure of H-BTA. Our interest also extended to the solution processability. A copolyimide derived from H-BTA with a sulfone-containing diamine and an ether-containing diamine achieved a very high optical transparency (T₄₀₀ = 86.8%), a very high T_g (313°C), and good ductility (ε_b max = 51%) while maintaining solution processability. Thus, these approaches enabled us to dramatically improve the ductility of cycloaliphatic PI films that have, to date, been considered brittle. 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. Application In Synthesis of 3-(4-Aminophenoxy)anilineEthers 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

Synthetic Route of C12H12N2OIn 2021, Winters, Jonas;Dehaen, Wim;Binnemans, Koen published 《N-butyl pyrrolidone/ionic liquid mixtures as benign alternative solvents to N-methyl pyrrolidone for the synthesis of polyaramids》. 《Materials Today Communications》published the findings. The article contains the following contents:

N-Me pyrrolidone (NMP) is a polar aprotic solvent that is critical for the production of polyaramids. However, due to its reprotoxicity and pending REACH restrictions, a benign alternative is needed. A mixture of N-Bu pyrrolidone (NBP) and the ionic liquid [C₈MIm][Cl] is proposed as a promising candidate to replace NMP. This organic electrolyte solution provides a green approach to polyaramid synthesis. 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 lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Synthetic Route of 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

Hu, Zhiqiang;Zhang, Chunhua;Li, Shanjun published 《Synthesis and Characterization of Soluble Cardo Poly(ester-imide)s Derived from 9,9-Bis[4-(3,4-dicarboxybenzoyloxy)phenyl]fluorene》. The research results were published in《Journal of Macromolecular Science, Part B: Physics》 in 2016.Related Products of 2657-87-6 The article conveys some information:

A novel fluorenyl cardo dianhydride-9,9-bis[4-(3,4-dicarboxybenzoyloxy)phenyl]fluorene (BDPF) was synthesized and characterized. A series of fluorenyl cardo poly(ester-imide)s (FCPEIs) were prepared by the polycondensation of BDPF with m-phenylenediamine, 4,4′-oxydianiline (4,4′-ODA), 3,4′-oxydianiline (3,4′-ODA), 2,2-bis[4-(4-aminophenoxy)phenyl]propane, 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane, and 1,6-hexamethylenediamine. Most of the FCPEIs exhibited excellent solubility in common organic solvents such as 1,2-dichlorobenzene (o-DCB), chloroform, THF, N,N-dimethylacetamide (DMAc), DMSO, N-methyl-2-pyrrolidinone, etc. Intrinsic viscosities of FCPEIs in DMAc, for instance, ranged from 0.29-0.52 dL/g. The glass transition temperature of these polymers was between 199°C and 283°C by differential scanning calorimentry, and the 5% weight loss temperature of all polymers exceeded 400°C in air. 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 lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Related Products 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

Kwon, Young Seung;Park, Gyu-Tae;Lee, Ji-Su;Hwang, Gyu-Hyun;Jeong, Young Gyu published 《Poly(Ether Amide)-Derived, Nitrogen Self-Doped, and Interfused Carbon Nanofibers as Free-Standing Supercapacitor Electrode Materials》 in 2021. The article was appeared in 《ACS Applied Energy Materials》. They have made some progress in their research.Related Products of 2657-87-6 The article mentions the following:

For free-standing and self-doped electrode materials of energy storage devices, in this study, we investigate the microstructures and electrochem. properties of aromatic poly(ether amide) (PEA)-derived carbon nanofibers (CNFs), which are manufactured by electrospinning mixed solutions of PEA and poly(vinyl pyrrolidone) (PVP) at three different compositions and carbonization of the as-spun nanofibers at 1000°C. The SEM, energy dispersive spectroscopy, Raman spectroscopy, and elemental analyses reveal that PEA-derived CNFs have a unique interfused network structure with nitrogen self-doped and quasi-ordered graphitic features. Accordingly, a high apparent elec. conductivity of 3.72-7.79 S/cm is attained for the CNFs. The cyclic voltammetry and galvanostatic charge-discharge measurements confirm that PEA-derived CNFs have excellent electrochem. properties in terms of a specific capacitance of ∼249.0 F/g at 1.0 A/g, power d. of 10,000-1,000 W/kg, energy d. of 30.1-69.1 Wh/kg, capacitance retention of ∼79%, and Coulombic efficiency of ∼92% after 3000 cycle tests. These results indicate that PEA-derived CNFs can be used as highly stable, self-supporting, and doping-free electrode materials for high-performance energy storage devices. 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. Related Products 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

Choi, Young Chul;Kim, Min Su;Ryu, Kyoung Moon;Lee, Sang Hoon;Jeong, Young Gyu published 《Synthesis and Characterization of Aromatic Poly(azomethine ether)s with Different meta- and para-Phenylene Linkage Contents》. The research results were published in《Fibers and Polymers》 in 2020.Product Details of 2657-87-6 The article conveys some information:

New aromatic poly(azomethine ether)s (PAMEs) bearing different meta- and para-phenylene linkage ratios in the main chains were synthesized via solution polycondensation reactions of terephthalaldehyde and/or isophthaldehyde with 3,4′-diaminodiphenyl ether. The mol. structures, thermal stability, thermo-mech. and optical properties of the synthesized PAME homopolymers and copolymers were investigated by using FT-IR, TGA, DMA, and UV-visible/ fluorescence spectroscopy, resp. The synthesized PAMEs were characterized to be thermally stable up to ∼400° under nitrogen or air atm. and to have high char residues of above 55% at 800° under nitrogen condition. The DMA data revealed that the glass transition temperatures of PMAEs are in the range of 150-200°, depending on the relative contents of meta- and para-phenylene linkages. The maximum absorption wavelength of transparent yellowish PAME films was detected at 410 ±10 nm. In addition, all PAME films exhibited a broad visible emission band at 500-800 nm and two IR emission bands at 800-1400 nm. The synthesized PAMEs with high thermal stability and thermo-mech. performance can be thus used as functional polymeric materials for tech. fibers, optoelectronic films, and carbon fiber precursors.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 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. Product Details 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

COA of Formula: C12H12N2OIn 2019, Zhou, Dianrui;Yuan, Lili;Hong, Weijie;Zhang, Haoyang;Hu, Aijun;Yang, Shiyong published 《Molecular design of interpenetrating fluorinated polyimide network with enhanced high performance for heat-resistant matrix》. 《Polymer》published the findings. The article contains the following contents:

Novel reactive phenylethynyl-endcapped diluents were synthesized and phys. mixed with fluorinated cooligoimides (mol. weights of 5000 g/mol) derived from 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), 2,2′-bis(trifluoromethyl)-4,4′-diamino biphenyl (TFDB) and para-phenylenediamine (p-PDA) at 25/75 M ratio, and 4-phenylethyethynylphthalic anhydride (PEPA) to formulate blends served as matrix resins for developing high-performance composites with excellent processabilities. The uncured blend shows very low min. melt viscosity (<1 Pa s) and extended process window achieved using molten solvation of reactive diluent to prevent intermol. interactions and recrystallization at higher temperature This blend was converted to interpenetrating polyimide network through thermal-curing of phenylethynyl end-groups in each constituent. The morphol., relaxation transition and mech. property were investigated as functions of mass fraction and chem. configuration of reactive diluent. The covalent incorporation of crosslink structures restricts segmental motion while backbone linkage induces strength and toughness retention. This cooperative effect endows homogeneous networks with high glass transition temperatures (435 °C) and flexural strength (130 MPa) simultaneously.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

HPLC of Formula: 2657-87-6《Preparation of high temperature resistant Ag/PI/Cu composite nano particles inserted with PI insulating layer》 was published in 2018. The authors were Qu, Chunyan;Li, Liaoliao;Liu, Changwei;Wag, Dezhi;Xiao, Wanbano;Zhu, Guangyu;Cao, Zhibo;Li, Hongfeng;Su, Kai, and the article was included in《Journal of Polymer Research》. The author mentioned the following in the article:

Polyimide (PI)@copper (Cu) composite nano particles have been successfully synthesized from poly(amic acid) triethylamine salts (PAAS) and Cu(II) ions via a one-step high-temperature induction/imidization route. The formation of PI@Cu nano particles has been investigated by the stoichiometric ratio of PAAS and Cu ion. The resulting products, formed stable shell-core structures, exhibited the uniform core-size and thick shell layer. Addnl., the multi-layer structure, Ag@PI@Cu, was successfully prepared via a post process of PI@Cu nanoparticles. The morphol. of the formed “Sunflower-mode” structure, with the pistil of Cu, the sunflower seed of PI, and the petal of Ag, was also characterized by SEM and TEM. Both elec. resistivity and thermal conductivity of nano particles were measured. The coefficient of heat conduction of Ag@PI@Cu is even 255 times, 754 times, 3081 times, and 1310 times as large as PI@Cu in 50 °C, 100 °C, 150 °C, and 200 °C, resp. The resistance of both nano particles is that the result of Rs_PI/Cu and Rs_Ag/PI/Cu is 11.0*10⁹ ω and 0.11 ω, resp., and also the difference between them is more than 10¹². And 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) was used in the research process.

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. HPLC of Formula: 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

Recommanded Product: 3-(4-Aminophenoxy)aniline《Kinetic study of copolymerized PMIA with ether moiety under air pyrolysis》 was published in 2020. The authors were Li, Na;Zhang, Xingke;Yu, Junrong;Wang, Yan;Zhu, Jing;Hu, Zuming, and the article was included in《Journal of Thermal Analysis and Calorimetry》. The author mentioned the following in the article:

Copolymerized poly(m-phenylene isophthalamide) (co-PMIA) was synthesized by solution polycondensation using m-phenylenediamine and isophthaloyl dichloride and 3,4′-oxydianiline (3,4′-ODA). This paper described the preparation and characterization of the copolymers from various contents 3,4′-ODA to afford co-PMIA with ideal high mol. mass. The copolymer showed excellent thermal stability with the glass transition temperature of 267°C and the onset decomposition temperature (5% mass loss) of 445°C. The thermal degradation of co-PMIA was measured with various thermal anal. techniques; the pyrolysis products were obtained and analyzed under air atm. The possible thermal decomposition mechanism of co-PMIA was discussed. The present pyrolysis was investigated using TG under air atm. at four different heating rates (5-20°C min^-1). Three different kinetic methods, the iso-conversional Ozawa-Flynn-Wall and Kissinger and Crane methods were applied on TG data of co-PMIA to calculate the kinetic parameters including activation energy, pre-exponential factor and reaction order.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 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: 3-(4-Aminophenoxy)aniline 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

Reference of 3-(4-Aminophenoxy)aniline《Unraveling Factors Leading to High Pseudocapacitance of Redox-Active Small Aromatics on Graphene》 was published in 2019. The authors were Zhao, Yi;Wang, Xiaoxu;Wang, Na;Li, Ming;Li, Qi;Liu, Jinzhang, and the article was included in《Journal of Physical Chemistry C》. The author mentioned the following in the article:

Graphene sheets functionalized by redox-active small aromatics can exhibit enhanced capacitance because of the introduced faradaic process. However, the immense number of possible mols. for energy storage makes the selection of the appropriate ones difficult. This study combines experiment and theory to unveil factors behind the different pseudocapacitance contributions of some aromatic isomers adsorbed onto graphene, aiming to provide a guideline for computationally screening out optimal mols. for supercapacitor electrodes. Eight kinds of mols. containing amino groups are intentionally selected to functionalize N-doped graphene (NG) and their electrochem. properties are compared. The HOMO level of a mol. is found to play an important role in rendering a high pseudocapacitance. Also, remarkable efficacies from two kinds of mols., 4-aminophenol and 1,5-naphthalenediamine (1,5-NAPD), are unveiled, and the role of the amino group in charge storage is discussed. As a result, the graphene film absorbed with 1,5-NAPD mols. shows a high specific gravimetric capacitance of 877 F/g within the voltage window of 1 V, corresponding to a high areal specific capacitance of 1.14 F/cm² from the thin film with a mass loading of 1.3 mg/cm². Also, the 1,5-NAPD/NG film shows good cycling stability, achieving 105% capacitance retention after 5000 charge-discharge cycles.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 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. Reference of 3-(4-Aminophenoxy)aniline 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

Hsieh, Ching-Wen;Li, Bo-Xian;Suen, Shing-Yi published 《Alicyclic Polyimide/SiO2 Mixed Matrix Membranes for Water/n-Butanol Pervaporation》. The research results were published in《Membranes (Basel, Switzerland)》 in 2021.HPLC of Formula: 2657-87-6 The article conveys some information:

Alicyclic polyimides (PIs) have excellent properties in solubility, mech. strength, thermal property, etc. This study developed two types of alicyclic PI-based mixed matrix membranes (MMMs) for water/n-butanol pervaporation application, which have never been investigated previously. The fillers were hydrophilic SiO₂ nanoparticles. The synthesized PI was mixed with SiO₂ nanoparticles in DMAc to make the casting solution, and a liquid film was formed over PET substrate using doctor blade. A dense MMM was fabricated at 80°C and further treated via multi-stage curing (100-170°C). The prepared membranes were characterized by FTIR, TGA, FE-SEM, water contact angle, and solvent swelling. The trends of pure solvent swelling effects agree well with the water contact angle results. Moreover, the pervaporation efficiencies of alicyclic PI/SiO₂ MMMs for 85 wt% n-butanol aqueous solution at 40°C were investigated. The results showed that BCDA-3,4′-ODA/SiO2 MMMs had a larger permeation flux and higher separation factor than BCDA-1,3,3-APB/SiO2 MMMs. For both types of MMMs, the separation factor increased first and then decreased, with increasing SiO2 loading. Based on the PSI performance, the optimal SiO2 content was 0.5 wt% for BCDA-3,4′-ODA/SiO2 MMMs and 5 wt% for BCDA-1,3,3-APB/SiO2 MMMs. The overall separation efficiency of BCDA-3,4′-ODA-based membranes was 10-30-fold higher. 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. HPLC of Formula: 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