Supported liquid membrane transport of alkali metal cations by monoazacryptand with a partially fluorinated sidearm and the corresponding monoazacrown ethers was written by Nakatsuji, Yohji;Fujimoto, Shingo;Nakamura, Misako;Muraoka, Masahiro. And the article was included in Journal of Oleo Science in 2010.Category: ethers-buliding-blocks This article mentions the following:
Monoazacryptand [20.18.18] (1), monoaza-15-crown-5 (2a), and monoaza-18-crown-6 (2b) with a partially fluorinated sidearm were newly prepared and their transport abilities were estimated in a supported liquid membrane containing a mixture of 2-(perfluorohexyl) Et alc. and 2- (perfluorooctyl) Et alc. In competitive passive transport of K+, Na+, and Li+ under neutral conditions, the K+ selectivity increased in the order: ionophore 2a<ionophore 2b<ionophore 1; whereas, the transport velocity increased in the order: ionophore 2a<ionophore 1<ionophore 2b. On the other hand, only ionophore 1 successfully transported K+ in the transport from the neutral source phase to the acidic receiving phase. This result was reasonably explained by considering the excellent K+ complexing ability of monoazacryptand (1) in comparison with that of monoazacrown ethers (2a and 2b). In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Category: ethers-buliding-blocks).
1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Category: ethers-buliding-blocks
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem