Chiral Plasmonic Nanoparticle Assisted Raman Enantioselective Recognition.,Analytical Chemistry

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Chiral Plasmonic Nanoparticle Assisted Raman Enantioselective Recognition.
Analytical Chemistry ( IF 6.7 ) Pub Date : 2020-05-24 , DOI: 10.1021/acs.analchem.0c01311
Xueping Sun ₁ , Huanjun Kong ₁ , Qinghai Zhou ₁ , Seiji Tsunega ₂ , Xinling Liu ₁ , Haifeng Yang ₁ , Ren-Hua Jin ₂

Affiliation

Au nanoparticles (NPs) labeled with the handedness tag of “d-” or “l-”, which were detached from inorganic chiral silica, showed both intrinsic chirality and surface enhanced Raman scattering (SERS) activity. In the presence of these chiral Au substrates, it was found that the enantiomer of cystine with the same handedness tag of Au NPs would show stronger Raman scattering signal intensities than those of the enantiomer with the opposite tag, where the differences could be over three times. Consequently, this work afforded a novel enantioselective recognition method on ordinary Raman spectroscopy by using chiral plasmonic metallic nanomaterials.

中文翻译：

手性等离子纳米粒子辅助拉曼对映选择性识别。

从无机手性二氧化硅上分离出来的带有“ d- ”或“ l- ”标记的金纳米颗粒（NPs）既表现出手性，又表现出表面增强的拉曼散射（SERS）活性。在存在这些手性金底物的情况下，发现具有相同Au NPs手性标签的胱氨酸对映体比具有相反标签的对映体的拉曼散射信号强度要强于具有相反标签的对映体，其差异可能超过三倍。。因此，这项工作通过使用手性等离激元金属纳米材料在普通拉曼光谱上提供了一种新颖的对映选择性识别方法。

更新日期：2020-05-24

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