Enhancement of Fluorescence and Raman Scattering in Cyanine-Dye Molecules on the Surface of Silicon-Coated Silver Nanoparticles

Kamalieva, Aisylu N.; Toropov, N. A.; Bogdanov, K. V.; Vartanyan, T. A.

doi:10.1134/s0030400x18030153

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…Smart design of SERS substrates provides very high sensitivity. The technique allows investigating of small amounts of substances and single molecules [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The most common materials applied in SERS are noble metals, namely, gold and silver [1][2][3][4][5][6][7][8][9]. There are two main types of SERS-active substrates such as nanoparticles and colloidosomes and surfaces with periodic structure.…”

Section: Introductionmentioning

confidence: 99%

“…Ag and Au nanoparticles increase the intensity of Raman spectra with high enhancement factors. However, the routine experiments with nanoparticles have lower reproducibility [1,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…The structure of micro-array based SERS substrates also can be damaged by different chemicals and solvents due to exfoliation processes. Moreover, there are some di culties in investigating and standardizing the surface of these substrates [1,4,6].…”

Section: Introductionmentioning

confidence: 99%

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Electrochemically formed inverse opals of silver

Arabov

Komarova

Knotko

et al. 2022

Preprint

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Silver inverse opals have been prepared electrochemically using a number of water-ethanol acidic or alkaline electrolytes. Opal matrices made of polystyrene microspheres of 420 nm diameter were used as templates. Compositions of electrolytes and conditions of syntheses have been optimized according to cyclic voltammetry and stability window of silver complexes during the experiments. Samples with the most uniform structure have been deposited from the iodous electrolyte. At the same time, the list percentage of surface admixtures observed for the opals formed from the rhodanide electrolyte using X-ray photoelectron spectroscopy (XPS). Reflectance optical spectra of the silver inverse opals measured with angles of incidence of 8 - 64° have shown various plasmon excitation modes in a visible spectral range according to the Bragg effect making the silver opals attractive for the Surface-Enhanced Raman Spectroscopy (SERS).

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“…Smart design of SERS substrates provides very high sensitivity. The technique allows investigating of small amounts of substances and single molecules [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Ag and Au nanoparticles increase the intensity of Raman spectra with high enhancement factors. However, the routine experiments with nanoparticles have lower reproducibility [1,7,8].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrochemically formed inverse opals of silver

Arabov

Komarova

Knotko

et al. 2022

Preprint

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“…It is reported that the sensitivity of biomedical spectroscopic is improved by the combination of the superior advantages and synergistic effects of SERS and SEF. Kamalieva et al [11] developed a composite structure based on silver nanoparticles and a thin protective silicon film. In Kamalieva et al’s research, the Raman scattering and fluorescence signal of cyanine-dye emitters on formed composite structure were enhanced by factors of 10 and 40, respectively.…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Fabrication of Nanostructure on Bio-Metallic Substrate for Surface Enhanced Raman and Fluorescence Scattering

Zhang

Jiao

2019

Nanomaterials

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The integration of surface-enhanced Raman scattering (SERS) and surface-enhanced fluorescence (SEF) has attracted increasing interest and is highly probable to improve the sensitivity and reproducibility of spectroscopic investigations in biomedical fields. In this work, dual-mode SERS and SEF hierarchical structures have been developed on a single bio-metallic substrate. The hierarchical structure was composed of micro-grooves, nano-particles, and nano-ripples. The crystal violet was selected as reporter molecule and both the intensity of Raman and fluorescence signals were enhanced because of the dual-mode SERS−SEF phenomena with enhancement factors (EFs) of 7.85 × 105 and 14.32, respectively. The Raman and fluorescence signals also exhibited good uniformity with the relative standard deviation value of 2.46% and 5.15%, respectively. Moreover, the substrate exhibited high sensitivity with the limits of detection (LOD) as low as 1 × 10−11 mol/L using Raman spectroscopy and 1 × 10−10 mol/L by fluorescence spectroscopy. The combined effect of surface plasmon resonance and “hot spots” induced by the hierarchical laser induced periodical surface structures (LIPSS) was mainly contributed to the enhancement of Raman and fluorescence signal. We propose that the integration of SERS and SEF in a single bio-metallic substrate is promising to improve the sensitivity and reproducibility of detection in biomedical investigations.

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