Mazur Nazar, Dzhagan Volodymyr, Kapush Olga, Isaieva Oksana, Demydov Petro, Lytvyn Vitalii, Chegel Volodymyr, Kukla Oleksandr, Yukhymchuk Volodymyr
V. Ye. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine 41 Nauky Avenue 03028 Kyiv Ukraine
RSC Adv. 2025 Jan 2;15(1):252-260. doi: 10.1039/d4ra07309f.
Detecting small concentrations of nitro-compounds surface-enhanced Raman spectroscopy (SERS) is reported. In particular, explosive analogues, such as 4-nitrophenol, 1-nitronaphthalene, and 5-nitroisoquinoline, and an explosive material (picric acid) are investigated and prepared by measurements using two different methods. One method involved mixing the analyte with plasmonic silver nanoparticles (Ag NPs) in a solution, followed by subsequent drop-casting of the mixture onto a silicon substrate. In the second method, the analyte solution was drop-casted onto SERS substrates formed by annealing of thin Ag films deposited over self-assembled layers of SiO spheres. Both approaches allowed for the SERS detection of analyte concentrations down to 10-10 M. Furthermore, the possible reasons for the different enhancements of the above analytes as well as their differences in the liquid (drop) and dried states are discussed.
报道了利用表面增强拉曼光谱（SERS）检测低浓度硝基化合物的方法。具体而言，对4-硝基苯酚、1-硝基萘和5-硝基异喹啉等爆炸物类似物以及一种爆炸材料（苦味酸）进行了研究，并采用两种不同方法进行测量制备。一种方法是将分析物与溶液中的等离子体银纳米颗粒（Ag NPs）混合，随后将混合物滴铸到硅基板上。第二种方法是将分析物溶液滴铸到通过对沉积在SiO球体自组装层上的薄银膜进行退火形成的SERS基板上。两种方法都能够实现对低至10-10 M的分析物浓度进行SERS检测。此外，还讨论了上述分析物增强效果不同以及它们在液态（液滴）和干燥状态下存在差异的可能原因。
