Excitation-wavelength-dependent charge transfer resonance of bipyridines on silver nanoparticles: surface-enhanced Raman scattering study

The resonance Raman effect (RRE) is a phenomenon which results in a strong selective enhancement of Raman signals from the samples. Previous studies showed that the RRE in liquid water directly corresponds to its supramolecular structure. It was also reported that the electric-field-induced orientation of water molecules on the electrode surface results in the surface-enhanced Raman scattering (SERS) effect. In this work, we show the SERS effect for water molecules in the dispersion of silver nanoparticles (AgNPs) without any external electrical field. An enhancement factor was estimated to be (4.8 ± 0.8) × 106 for an excitation wavelength of 514.5 nm and for AgNPs with an average size of 34 ± 14 nm. The temperature experiment results showed a higher enhancement with temperature increase. Performed simulation studies revealed a slowdown of the mobility of the water molecules close to the surface of AgNPs.

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Investigation of charge transfer at the TiO2–MBA–Au interface based on surface-enhanced Raman scattering: SPR contribution

Physical Chemistry Chemical Physics ◽

10.1039/c8cp00014j ◽

2018 ◽

Vol 20 (8) ◽

pp. 5666-5673 ◽

Cited By ~ 9

Author(s):

Rui Han ◽

Wei Song ◽

Xu Wang ◽

Zhu Mao ◽

Xiao Xia Han ◽

...

Keyword(s):

Charge Transfer ◽

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Excitation Wavelength ◽

Interfacial Charge Transfer ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Interfacial Charge

Investigation of SPR contribution to interfacial charge transfer by tuning the SPR of the assemblies and excitation wavelength.

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Self-assembled dynamics of silver nanoparticles and self-assembled dynamics of 1,4-benzenedithiol adsorbed on silver nanoparticles: Surface-enhanced Raman scattering study

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy ◽

10.1016/j.saa.2009.06.055 ◽

2009 ◽

Vol 74 (2) ◽

pp. 509-514 ◽

Cited By ~ 9

Author(s):

Mengtao Sun ◽

Lixin Xia ◽

Maodu Chen

Keyword(s):

Silver Nanoparticles ◽

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Scattering Study ◽

Self Assembled

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A facile surface enhanced Raman scattering substrate based on silver deposited sandpaper

Modern Physics Letters B ◽

10.1142/s0217984919502397 ◽

2019 ◽

Vol 33 (21) ◽

pp. 1950239 ◽

Cited By ~ 3

Author(s):

Dongdong Yuan ◽

Shu Chen ◽

Yanan Wu ◽

Junqiao Wang

Keyword(s):

Silver Nanoparticles ◽

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Excitation Wavelength ◽

Enhancement Effect ◽

Sers Substrate ◽

Sers Enhancement ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

Flexible surface enhanced Raman scattering (SERS) substrate was prepared by modification of sandpaper with silver nanoparticles. Under 633 nm excitation wavelength, the SERS enhancement effect of sandpapers which were treated with silver nanoparticles were evaluated by collecting Raman signals of probed molecules. The results demonstrate that the SERS enhancement effect of white (12,000 meshes) is better than that of pink (8000 meshes) sandpaper under the same condition; when the concentration of probe molecules is [Formula: see text] mol/L, white sandpaper has the best SERS enhancement; the Raman scattering spectrum has better signal when the silver sol is 15 [Formula: see text].

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