Synthesis of Spiked Plasmonic Nanorods with an Interior Nanogap for Quantitative Surface-Enhanced Raman Scattering Analysis | Zendy

Yang Zhang | Zendy; Chen Li | Zendy; Zahra Fakhraai | Zendy; Basem Moosa | Zendy; Peng Yang | Zendy; Niveen M. Khashab | Zendy

Open Access

Synthesis of Spiked Plasmonic Nanorods with an Interior Nanogap for Quantitative Surface-Enhanced Raman Scattering Analysis

Author(s) -

Yang Zhang,

Chen Li,

Zahra Fakhraai,

Basem Moosa,

Peng Yang,

Niveen M. Khashab

Publication year - 2018

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.8b01153

Subject(s) - raman scattering , nanorod , raman spectroscopy , analyte , materials science , plasmon , molecule , adsorption , nanotechnology , analytical chemistry (journal) , optoelectronics , chemistry , optics , chromatography , organic chemistry , physics

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).

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