Xiong, Dazhen published the artcileTemperature-switchable deep eutectic solvents for selective separation of aromatic amino acids in water, SDS of cas: 645-56-7, the publication is Separation and Purification Technology (2021), 118479, database is CAplus.
Amino acids are vital compounds in animal and human nutrition. However, it is still a great challenge to develop a cost-effective process for selective separation of amino acids. In the present study, a class of deep eutectic solvents (DESs) with short-chain alkanolamines as hydrogen bond acceptors (HBAs) and phenolic compounds as hydrogen bond donors (HBDs) have been explored for selective separation of aromatic amino acids for the first time. It is found that these DESs exhibit upper critical solution temperature (UCST)-type phase behavior in water, and their phase transition temperature is related with the pKa values of HBAs and HBDs as well as the hydrophobicity of HBDs. The UCST-type phase separation process is investigated by dynamic light scattering (DLS), FT-IR spectroscopy and temperature-variable 1H NMR in details, and the stability of the DESs in water is also examined Interestingly, these UCST-type DESs/water systems are applicable to selective separation of aromatic amino acids. The separation factor between
Separation and Purification Technology published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C10H18O4, SDS of cas: 645-56-7.
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