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Colloidal stability of nanoparticles stabilized with mixed ligands in solvents with varying polarity

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Abstract

Colloidal stability of nanoparticles (NPs) strongly influences their synthesis, processing, and applications. For gold NPs stabilized with cetyl trimethylammonium bromide (CTAB) and polymer ligands we show that gradual increase in polarity of the water/aprotic solvent mixture leads to stabilization–aggregation–stabilization–aggregation transitions. We propose that these transitions are mediated by structural rearrangements of the CTAB layer on the NP surface.

Graphical abstract: Colloidal stability of nanoparticles stabilized with mixed ligands in solvents with varying polarity

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Article information


Submitted
14 Apr 2020
Accepted
01 Jun 2020
First published
01 Jun 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Colloidal stability of nanoparticles stabilized with mixed ligands in solvents with varying polarity

H. Zhu, E. Prince, P. Narayanan, K. Liu, Z. Nie and E. Kumacheva, Chem. Commun., 2020, Advance Article , DOI: 10.1039/D0CC02592E

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