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The extraction behavior of various nucleobases was investigated with a series of calixarene derivatives. A calix[6]arene acetic acid was found to extract around 80% of adenine from an aqueous phase, and showed the highest specificity for adenine among all the nucleobases tested. The important factors influencing the recognition properties of calixarene were discovered to be its cyclic structure, its...
A calix[6]arene carboxylic acid derivative was utilized as an extractant for various amino compounds including amino acids. The host compound exhibited a high extractability compared to that of commercially available extractants such as di(2-ethylhexyl)phosphoric acid (D2EHPA). The important factors for amino acid extraction were found to be its cyclic structure and its cavity size, the functional...
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