Growing Gold Nanostars on SiO<sub>2</sub> Nanoparticles: Easily Accessible, NIR Active Core–Shell Nanostructures from PVP/DMF Reduction

Laura C. Straub; John A. Capobianco; Mathias S. Wickleder

doi:10.3390/chemistry4030046

Chemistry (Jun 2022)

Growing Gold Nanostars on SiO<sub>2</sub> Nanoparticles: Easily Accessible, NIR Active Core–Shell Nanostructures from PVP/DMF Reduction

Laura C. Straub,
John A. Capobianco,
Mathias S. Wickleder

Affiliations

Laura C. Straub: Department of Chemistry, Institute of Inorganic Chemistry, University of Cologne, 50939 Cologne, Germany
John A. Capobianco: Department of Chemistry and Biochemistry, Centre for NanoScience Research, Concordia University, Montreal QC H4B 1R6, Canada
Mathias S. Wickleder: Department of Chemistry, Institute of Inorganic Chemistry, University of Cologne, 50939 Cologne, Germany

DOI: https://doi.org/10.3390/chemistry4030046
Journal volume & issue: Vol. 4, no. 3
pp. 647 – 654

Abstract

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A new synthesis strategy towards gold-coated silica nanoparticles is presented. The method provides an efficient, reliable and facile-coating process of well-defined star-shaped shell structures, characterized by UV-Vis, TEM, PXRD, DLS and zeta-potential measurements. A marked red shift of the Au-based plasmonic band to the region of the first biological window is observed offering great potential for future research of biological applications.

Published in Chemistry

ISSN: 2624-8549 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/chemistry

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