Self-Assembled Monolayer of Silver Nanorods for Surface-Enhanced Raman Scattering

Surface-enhanced Raman scattering (SERS) integrates high levels of sensitivity with spectroscopic precision and thus has tremendous potential for chemical and biomolecular sensing. The key to the wider application of Raman spectroscopy using roughened metallic surfaces is the development of highly enhancing substrates for analytical purposes, i.e., for better detection sensitivity of tracing contaminants and pollutants. Controlled methods for preparing nano-structured metals may provide more useful correlations between surface structure and signal enhancement. Here, we self-assembled silver nanorods on glass substrates for sensitive SERS substrates. The enhanced surface Raman scattering signals were observed and mainly attributed to the local field enhancement.

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Self-Assembled Monolayer of Silver Nanorods for Surface-Enhanced Raman Scattering

Key Engineering Materials - High-Performance Ceramics IV ◽

10.4028/0-87849-410-3.2146 ◽

2007 ◽

pp. 2146-2148

Author(s):

Yong Yang ◽

Masayuki Nogami

Keyword(s):

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Self Assembled Monolayer ◽

Silver Nanorods ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Self Assembled

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Binary “island” shaped arrays with high-density hot spots for surface-enhanced Raman scattering substrates

Nanoscale ◽

10.1039/c8nr02669f ◽

2018 ◽

Vol 10 (29) ◽

pp. 14220-14229 ◽

Cited By ~ 15

Author(s):

Weidong Zhao ◽

Shuyuan Xiao ◽

Yuxian Zhang ◽

Dong Pan ◽

Jiahui Wen ◽

...

Keyword(s):

Raman Scattering ◽

Hot Spots ◽

Surface Enhanced Raman Scattering ◽

High Density ◽

Self Assembled Monolayer ◽

Sers Substrates ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Self Assembled

The BISA with high-density hot spots as reproducible SERS substrates by combining an opal structure with self-assembled monolayer AuNPs is demonstrated.

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Optimization of multilayer surface-enhanced Raman scattering (SERS) immuno-nanosensors via self-assembled monolayer spacers

10.1117/12.818124 ◽

2009 ◽

Cited By ~ 2

Author(s):

Charles K. Klutse ◽

Honggang Li ◽

Brian M. Cullum

Keyword(s):

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Self Assembled Monolayer ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Self Assembled

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Raman Enhancement of Nanoparticle Dimers Self-Assembled Using DNA Origami Nanotriangles

Molecules ◽

10.3390/molecules26061684 ◽

2021 ◽

Vol 26 (6) ◽

pp. 1684

Author(s):

Sergio Kogikoski ◽

Kosti Tapio ◽

Robert Edler von Zander ◽

Peter Saalfrank ◽

Ilko Bald

Keyword(s):

Raman Scattering ◽

Single Molecule ◽

Resonance Effect ◽

Field Enhancement ◽

Surface Enhanced Raman Scattering ◽

Dna Origami ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Self Assembled

Surface-enhanced Raman scattering is a powerful approach to detect molecules at very low concentrations, even up to the single-molecule level. One important aspect of the materials used in such a technique is how much the signal is intensified, quantified by the enhancement factor (EF). Herein we obtained the EFs for gold nanoparticle dimers of 60 and 80 nm diameter, respectively, self-assembled using DNA origami nanotriangles. Cy5 and TAMRA were used as surface-enhanced Raman scattering (SERS) probes, which enable the observation of individual nanoparticles and dimers. EF distributions are determined at four distinct wavelengths based on the measurements of around 1000 individual dimer structures. The obtained results show that the EFs for the dimeric assemblies follow a log-normal distribution and are in the range of 106 at 633 nm and that the contribution of the molecular resonance effect to the EF is around 2, also showing that the plasmonic resonance is the main source of the observed signal. To support our studies, FDTD simulations of the nanoparticle’s electromagnetic field enhancement has been carried out, as well as calculations of the resonance Raman spectra of the dyes using DFT. We observe a very close agreement between the experimental EF distribution and the simulated values.

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