Data for publication entitled: Silica-coated gold nanoshells. Surface chemistry, optical properties and stability

Research data that was used to create the publication entitled: Silica-coated gold nanoshells: Surface chemistry, optical properties and stability. Gordel-Wójcik Marta, Pietrzak Michał, Kołkowski Radosław, Zych Eugeniusz. Journal of Luminescence, 2024, 270, 120565/1-120565/9. DOI: 10.1016/j.jlumin.2024.120565This study provides a detailed investigation into the optical characteristics of colloidal gold nanoshells (NSs) with varying gold layer thicknesses and an additional silica coating. Our findings indicate that the spectral position of the localized plasmon resonance in NSs is highly sensitive to these parameters. Additionally, we observe that the silica layer plays a crucial role in enhancing the stability of colloidal systems. To complement our experimental results, we perform theoretical calculations that illustrate how absorption and scattering contribute to the overall extinction as a function of gold layer thickness. These calculations also shed light on the mechanisms behind spectral broadening in clustered NSs. Our results offer valuable insights for designing hybrid materials with applications in refractive-index sensing, metal-enhanced fluorescence (MEF), and surface-enhanced Raman scattering (SERS).Please consult the readme.txt file for additional information.

本研究数据用于撰写题为《二氧化硅包覆金纳米壳：表面化学、光学特性及稳定性》的出版物。作者：Gordel-Wójcik Marta、Pietrzak Michał、Kołkowski Radosław、Zych Eugeniusz。发表于《发光学报》（Journal of Luminescence）2024年第270卷，页码120565/1-120565/9。DOI：10.1016/j.jlumin.2024.120565

本研究对具有不同金层厚度及额外二氧化硅包覆的胶体金纳米壳（NSs）的光学特性展开了详细探究。研究发现，纳米壳中局域等离子体共振的光谱位置对这些参数高度敏感。此外，我们观察到二氧化硅层在提升胶体体系稳定性方面发挥着关键作用。为补充实验结果，我们进行了理论计算，阐明了吸收与散射如何随金层厚度变化对整体消光产生贡献。这些计算还揭示了聚集态纳米壳光谱展宽背后的机制。我们的研究结果为设计应用于折射率传感、金属增强荧光（MEF）及表面增强拉曼散射（SERS）的杂化材料提供了宝贵见解。更多信息请查阅readme.txt文件。