We have synthesized molecular library of antimicrobial agents using macromolecular frameworks such as macrocycles (Fig. 1b) and polymers. All our antimicrobial agents have amphiphilic nature originated in the cationic grou1J as well as hydrophobic moieties. Bioactivity assay revealed that out antimicrobial agents express higher antimicrobial activ-ity against both gram-negative E.coli and gram positive antimicrobial agents were related to their membrane disTuption activity.