Date of Award

12-17-2025

Document Type

Honors Thesis

Department

Chemistry & Biochemistry

First Advisor

Ryan T. Hayes

Second Advisor

Melissa Poua

Abstract

This study investigated the antimicrobial activity of G1, G2, and G3-Hex-NH2 polyamidoamine (PAMAM) dendrimers with an emphasis on how dendrimer size influenced their efficacy against C. acnes and S. epidermidis. Dendrimers are nano-sized, radially symmetric polymers composed of highly branched units that extend out from a central core. Dendrimers are known to exhibit antimicrobial activity against Gram-negative bacteria by disrupting the lipid bilayer and causing membrane damage. This study explored their effect on a different group of microorganisms–Gram-positive skin flora. Kirby-Bauer disk diffusion tests were performed to evaluate minimum inhibitory concentrations for each dendrimer solution. All generations of PAMAM dendrimers demonstrated antimicrobial activity against the two organisms.

Subject Area

Dendrimers; Acne; Skin--Diseases

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