Issue 2, 2022

Impurities in polyvinylpyrrolidone: the key factor in the synthesis of gold nanostars

Abstract

Control over the synthesis of anisotropic nanoparticles is crucial as slight differences in their size, shape, sharpness, or the number of tips in the case of gold nanostars, has an inordinate influence on their properties and functionality for future applications. Herein, we show that the supplier and purity of polyvinylpyrrolidone (PVP) can significantly alter the synthesis of gold nanostars, demonstrating that impurities, not PVP itself, are the main factor responsible for star-like shape formation. We demonstrate that in the presence of pure PVP and N,N-dimethylformamide, the use of hydrazine leads to the formation of branched nanoparticles. This synthetic approach opens the door to solving issues associated with the use of commercial PVP during the synthesis of gold nanostars.

Graphical abstract: Impurities in polyvinylpyrrolidone: the key factor in the synthesis of gold nanostars

Supplementary files

Article information

Article type
Communication
Submitted
24 Sep 2021
Accepted
26 Nov 2021
First published
01 Dec 2021
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2022,4, 387-392

Impurities in polyvinylpyrrolidone: the key factor in the synthesis of gold nanostars

P. Taladriz-Blanco, M. Spuch-Calvar, A. D. Prado, C. Weder, B. Rother-Rutishauser, A. Petri-Fink and L. Rodriguez-Lorenzo, Nanoscale Adv., 2022, 4, 387 DOI: 10.1039/D1NA00711D

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