We have synthesized molecular library of antimicrobial agents using macromolecular fraJneworks such as macrocycles (Fig. 1b) and polymers. All our antimicrobial agents have amphiphilic nature originated in the cationic grou1J as well as hydrophobic moieties. ìBioactivity assay irevealed that out antimicrobial agents express higher antimicrobial activ-ity against bofn graJn-neg L'. cott and graJn-_ antimicrobial agents were related to their membrane disTuption activity.