Structure and Zeta Potential of Gold Nanoparticles with Coronas of Varying Size and Composition.

ABSTRACT: The structure of the soft ligand shell in engineered nanoparticles is related to their physical and chemical properties. The variation in that structre is critical for extending the diversity of functions in a wide variety of applications. To uncover the structure of soft PAH coronas wrapped on gold nanoparticles (AuNPs), in particular, we used atomistic simulations in this work. We found that increasing the number of PAH chains can increase both the size of the soft PAH corona and the magnitude of the electric potential of the PAH-wrapped cit-AuNPs (PAH-AuNPs). We also found that when the salt concentration increases, both the soft corona size and the electric potential decrease due to Debye screening. We compared the ligand structures, ion distributions, and electric potentials of 5 diff

SUBMITTER: Wei X 

PROVIDER: S-EPMC11875082 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature