Comparison of silica coating methods for Triton-based gold nanostars
Daria V. Manushina,1,2 Maria A. Marinina,1,2 Andrey V. Simonenko,1,3 Andrey M. Burov,1 Vitaly A. Khanadeev,1,2
1 Institute of Biochemistry and Physiology of Plants and Microorganisms – Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), Saratov, Russia;
2 Saratov State University of Genetics, Biotechnology and Engineering Named after N. I. Vavilov, Saratov, Russia;
3 Saratov State University, Saratov, Russia;
Abstract
Gold nanostars synthesized using Triton X100 have a special morphology - they have long and thin spikes and a relatively small core size. Due to their remarkable morphological and plasmonic properties, such nanostars are one of the promising templates for use in composite nanoparticles for biomedical applications. Silica coating is one of the standard procedures that allow, on the one hand, protecting the metal core nanoparticles from aggregation, and on the other hand, it can serve for surface or bulk adsorption of target molecules. In this work, the applicability of different protocols for coating Triton-based gold nanostars with silica shell was investigated. The most common coating methods used were the modified Stober method and the method of forming an organosilica shell using (3-mercaptopropyl)trimethoxysilane (MPTMS). The results obtained in this work on coating Triton-based gold nanostars with a silica shell can be used in biomedical applications to create composite nanoparticles with desired properties.
This research was supported by the Russian Science Foundation, grant No. 23-22-00354,
https://rscf.ru/en/project/23-22-00354/.
Speaker
Daria V. Manushina
Saratov State University of Genetics, Biotechnology and Engineering named after N. I. Vavilov, Saratov, Russia;
Russia
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