Surface-enhanced Raman scattering-based molecular encoding with gold nanostars for anticounterfeiting applications
Surface-enhanced Raman scattering-based molecular encoding with gold nanostars for anticounterfeiting applications
复制标题
DOI：
10.1039/d1ma00348h
复制
发表时间：
2021-06-07
影响因子：
5
通讯作者：
Jiang, Chaoyang
中科院分区：
文献类型：
--
作者：
Huo, Yifeng;Curry, Samantha;Jiang, Chaoyang
近年来，表面增强拉曼散射（Sers）技术与其他光学方法相结合，利用拉曼光谱中丰富的分子指纹不易被伪造的特点，制备了新型防伪材料。利用这些分子特征，制备具有增强的Sers增强和稳定性的新型纳米结构至关重要。在此，我们合成了星形金纳米粒子作为Sers基底，并将其应用于各种拉曼探针制备Sers标签。利用主成分分析（PCA）成功地解码了编码的分子信息。这些胶体标签可以在嵌入聚合物基质中时进一步稳定。我们做了一个原型圆珠笔，可以用这些秘密Sers墨水做简单的书写。
Recently, surface-enhanced Raman scattering (SERS) joined other optical methods in making novel anticounterfeiting materials due to the fact that abundant molecular fingerprints in Raman spectra can be less susceptible to fraud. Using these molecular features, it is critical to make novel nanostructures with increased SERS enhancement and stability. Herein, we synthesized star-shaped gold nanoparticles as SERS substrates and applied various Raman probes with these gold nanostars to make SERS tags. The encoded molecular information was successfully decoded using principal component analysis (PCA). These colloidal tags can be further stabilized when embedded in a polymer matrix. We made a prototype ballpoint pen that can do simple writing with these secret SERS inks.