Synthesis and characterization of novel optically active poly(amide imide)s containing N N_-(pyromellitoyl)-bis-L-valine diacid chloride and 5 5-disubstituted hydantoin derivatives under microwave irr

Synthesis and characterization of novel optically active poly(amide imide)s containing N N_-(pyromellitoyl)-bis-L-valine diacid chloride and 5 5-disubstituted hydantoin derivatives under microwave irr
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