Synthesis and SERS properties of Au@Au and Au@Ag nanomatryoshkas with embedded reporters

Vitaly Khanadeev; Boris Khlebtsov; Snezhana Kushneruk; Nikolai Khlebtsov

doi:10.1117/12.2522650

3 June 2019 Synthesis and SERS properties of Au@Au and Au@Ag nanomatryoshkas with embedded reporters

Vitaly Khanadeev, Boris Khlebtsov, Snezhana Kushneruk, Nikolai Khlebtsov

Proceedings Volume 11067, Saratov Fall Meeting 2018: Computations and Data Analysis: from Nanoscale Tools to Brain Functions; 1106719 (2019) https://doi.org/10.1117/12.2522650
Event: International Symposium on Optics and Biophotonics VI: Saratov Fall Meeting 2018, 2018, Saratov, Russian Federation

Abstract

The widespread use of SERS for bioimaging led to the development of the novel types of labels called SERS tags. SERS tags based on a metal core with adsorbed Raman reporters and coated with one or more metal shells are called nanomatryoshkas. In this work we investigated nanomatryoshkas based on gold nanorods coated by 4-nitrobenzenethiol Raman reporter molecules with gold and silver shell (AuNRs@NBT@Au and AuNRs@NBT@Ag, respectively). By changing the conditions of synthesis we can regulate the presence or absence of a gap inside the gold nanomatryoshkas. Moreover, it was found that for these particles the SERS enhancement factor does not depend on the presence of a gap, for both cases enhancement factor is about 4×10⁵. For nanomatryoshkas with a silver shell, it was found that the absence of a visible gap is a feature of these particles, in good agreement with the literature data.

Citation Download Citation

Vitaly Khanadeev, Boris Khlebtsov, Snezhana Kushneruk, and Nikolai Khlebtsov "Synthesis and SERS properties of Au@Au and Au@Ag nanomatryoshkas with embedded reporters", Proc. SPIE 11067, Saratov Fall Meeting 2018: Computations and Data Analysis: from Nanoscale Tools to Brain Functions, 1106719 (3 June 2019); https://doi.org/10.1117/12.2522650

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