Engineering Gram Selectivity of Mixed‐Charge Gold Nanoparticles by Tuning the Balance of Surface Charges
- Department of Chemistry and Department of Chemical and Biological Engineering Northwestern University 2145 Sheridan Road Evanston IL 60208 USA, Department of Chemistry Indian Institute of Science Education and Research (IISER) Pune Dr. Homi Bhabha Road Pune 411008 India
- Department of Chemistry and Department of Chemical and Biological Engineering Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
- IBS Center for Soft and Living Matter and Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) Ulsan South Korea
Abstract Nanoparticles covered with ligand shells comprising both positively and negatively charged ligands exhibit Gram‐selective antibacterial action controlled by a single experimental parameter, namely the proportion of [+] and [−] ligands tethered onto these particles. Gram selectivity is attributed to the interplay between polyvalent electrostatic and non‐covalent interactions that work in unison to disrupt the bacterial cell wall. The [+/−] nanoparticles are effective in low doses, are non‐toxic to mammalian cells, and are tolerated well in mice. These results constitute the first example of rational engineering of Gram selectivity at the (macro)molecular level.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0000989
- OSTI ID:
- 1400458
- Journal Information:
- Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 128 Journal Issue: 30; ISSN 0044-8249
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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