【摘 要】
：
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
【机 构】
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Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of
【出 处】
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Science China(Chemistry)
论文部分内容阅读
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~–.
We reported 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. ions (I ~ -) could alternatively 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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