Smotrina, T. V.;Smotrin, V. A.;Stoyanov, O. V. published 《Molecular mobility and proton magnetic relaxation processes in water-polymer system》 in 2014. The article was appeared in 《Vestnik Kazanskogo Tekhnologicheskogo Universiteta》. They have made some progress in their research.Safety of 3-(4-Aminophenoxy)aniline The article mentions the following:
The processes of proton magnetic relaxation in hydrated polymers were studied. It is established that in the presence of water spin-lattice relaxation in rigid-chain polymers that do not contain moving side substituents (for example, aromatic polyamides), is carried out mainly through a phase of sorbed water mols. which act as addnl. relaxation. For hydrated polysaccharides containing movable oxymethylene group, and flexible-chain aliphatic polyamides (example capron) a significant contribution to the processes of spin-lattice relaxation make mol. motion activated their amorphous phase, which gave the opportunity for these polymers to register, resp., the – and the-relaxation transitions. 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. Safety 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