Abstract
We report a new strategy to prepare gold nanoflowers (AuNFs) using a two-step seed-mediated method. The as-prepared AuNFs were employed as surface-enhance Raman scattering (SERS) substrates, showing strong signal enhancement. We further found that iodide ions (I–) could selectively induce the morphological transformation of AuNFs to spheres, resulting in a blue-shift of the localized surface plasmon resonance (LSPR) bands, a color change of the AuNFs solution from blue to red, and decreased SERS activity. This behavior allows the AuNFs to be used in the determination of I–.
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Zhen, S., Wu, T., Huang, X. et al. Facile synthesis of gold nanoflowers as SERS substrates and their morphological transformation induced by iodide ions. Sci. China Chem. 59, 1045–1050 (2016). https://doi.org/10.1007/s11426-015-0482-5
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DOI: https://doi.org/10.1007/s11426-015-0482-5