Synthesis and characterization of novel optically active poly(amide-imide)s and poly(ester-imide)s containing calix 4 arene and amino acid units with binding ability towards alkali metal and toxic heavy metal cations

Synthesis and characterization of novel optically active poly(amide-imide)s and poly(ester-imide)s containing calix 4 arene and amino acid units with binding ability towards alkali metal and toxic heavy metal cations
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