Smart Hybrid Materials (SHMs)
مختبر شمس لعلوم النانو
Self-Assembled Nanomaterials for Biomedical, Sensing and Separation Applications

Publications 2018

Synthesis of spiked plasmonic nanorods with an interior nanogap for quantitative surface-enhanced raman scattering analysis

​Y. Zhang, C. Li, Z. Fakhraai, B. Moosa, P. Yang, N.M. Khashab. Synthesis of spiked plasmonic nanorods with an interior nanogap for quantitative surface-enhanced raman scattering analysis. ACS Omega 3 (10), 14399-14405, 2018
Y. Zhang, C. Li, Z. Fakhraai, B. Moosa, P. Yang, N.M. Khashab
Core-shell materials, nanoparticles, nanostructures, raman spectroscopy
2018
​Realizing quantitative surface-enhanced Raman scattering (SERS) analysis is extremely helpful and challenging. Here, we utilize a facile method to synthesize spiked plasmonic nanorods with an interior gap. The Raman signal from the molecules embedded in the gap can be dramatically enhanced, leading to strong, stable, and reproducible SERS signals that can be used as an internal reference for quantitative SERS analysis. We demonstrate that the rough exterior surface has a good performance in enhancing the Raman signal of polycyclic aromatic hydrocarbon molecules adsorbed on the surface. The result shows that this method is applicable for a large range of analyte concentrations and there is an excellent linear relationship between the SERS intensity ratio and the analyte concentration (0.5–100 μM).