Silver nanostars: influence of synthesis parameters on optical and morphological properties and potential for biosensing applications
Vitaly A. Khanadeev1,2, Andrey V. Simonenko1,3, Andrey M. Burov1, Maria A. Marinina1,2,
1 Institute of Biochemistry and Physiology of Plants and Microorganisms, Saratov 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
Silver nanostars have attracted considerable attention in the field of nanoplasmonics due to their unique shape and pronounced spikes that provide enormous electromagnetic field enhancement, making them ideal substrates for surface-enhanced Raman spectroscopy (SERS). This work presents a comprehensive study of the wet-chemical synthesis of silver nanostars via a wet chemistry, with a particular focus on the influence of synthesis parameters on the resulting morphology and optical properties. By systematically varying these parameters, we establish a direct structure-property correlation, demonstrating that fine-tuning the reaction kinetics allows control over the number and length of the branches. The morphological evolution was characterized by transmission electron microscopy (TEM) and UV-Vis-NIR spectroscopy. Furthermore, we explore the practical utility of the synthesized nanostars as SERS substrates for biosensing applications.
Speaker
Vitaly A. Khanadeev
Institute of Biochemistry and Physiology of Plants and Microorganisms, Saratov Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), Saratov, Russia; Saratov State University of Genetics, Biotechnology, and Engineering named after N. I. Vavilov, Saratov, Russia
Russia
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