Surface-enhanced Raman spectra of a complex of antimony with phenylfluorone and their interpretation

Гладкова, Ольга; Panarin, A. Yu.; Ходасевич, И. А.; Терехов, С. Н.

doi:10.1134/s0030400x12040091

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…The calculation predicts the change of normal mode composition due to considerable alterations in C 6 O 4 and C 7 O 5 bonds when going from PhF 58 to Sb-PhF. 59 Thus, the characteristic peaks at 1163, 1354, and 1505 cm −1 are unique spectral features of the antimony complex, which permits the analysis of the presence of metal.…”

Section: Resultsmentioning

confidence: 98%

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Determination of Antimony by Surface-Enhanced Raman Spectroscopy

et al. 2014

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A highly sensitive method for the detection and quantitative evaluation of antimony(III) using the surface-enhanced Raman scattering (SERS) technique is demonstrated. The method is based on the analysis of SERS spectra intensity of antimony bound to phenylfluorone (Sb-PhF). Phenylfluorone is widely used as an organic reagent for the spectrophotometric determination of some heavy metals. For the SERS experiment a Sb-PhF complex was adsorbed onto the silvered porous silicon substrate. The significant degradation of the SERS signal was observed during measurements in the air. The time evolution of SERS spectra at ambient and degassed conditions was investigated to find an optimal regime for SERS measurements. The limit of Sb detection in degassed samples was determined to be near 1 ng/mL, which is one order of magnitude less than that attainable by the photometric approach. The linear range of the method to Sb(III) was found to a mass concentration range of 1-10 ng/mL. This approach permits an absolute quantity of Sb(III) to be detected at the picogram level (∼50 pg). It is remarkable that a very small sample volume (50 μL) is required for SERS analysis. Moreover this technique offers high selectivity owing to the distinctive vibrational features for the metallorganic complex and to the resonance character of Raman spectra. The proposed SERS-based detection of Sb is a fast and highly sensitive method for use in environmental and industrial waste monitoring as well as for forensic science to determine gunshot residue. We expect that the approach reported herein can be further extended to develop new detection techniques for other heavy metals.

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Section: Resultsmentioning

confidence: 98%

“…Table I summarizes conventional SERS peaks of Sb-PhF and PhF and gives their assignments as proposed recently. 58,59 The type of normal vibrations is given as natural coordinates, ordered as their contribution decreases. Table I does not list all coordinates but only those that undergo the largest changes in the corresponding vibrational mode.…”

Section: Resultsmentioning

confidence: 99%

Determination of Antimony by Surface-Enhanced Raman Spectroscopy

et al. 2014

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“…Similar effects were observed in the studies on the creation of complexes with other metal ions. Phenylfluorone was reported to create a complex with antimony, the features of which were investigated by UV-Vis and Raman spectroscopy, revealing the possibility of application for detection and quantitative determination of the antimony content in toxicology [42]. The material functionalized with PF was also used for cadmium and copper determination in water samples [43].…”

Section: Discussionmentioning

confidence: 99%

Organic Dyes in Dye-Sensitized Solar Cells Featuring Back Reflector

Zdyb

Krawczak

2021

Energies

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Dye-sensitized solar cells (DSSCs) were fabricated using a photoelectrode covered by a porous layer of titanium dioxide, platinum counter electrode, iodide/triiodide electrolyte and three different dyes: phenylfluorone (PF), pyrocatechol violet (PCV) and alizarin (AL). After the adsorption of the dyes on the mesoporous TiO2 layer, the measurement of absorption spectra of all the tested dyes revealed a significant broadening of the absorption range. The positions of highest occupied molecular orbital (HOMO) and lowest occupied molecular orbital (LUMO) levels of dye molecules were determined, indicating that all three dyes are good candidates for light harvesters in DSSCs. The cells were tested under simulated solar light, and their working parameters were determined. The results showed that the implementation of the back reflector layer made of BaSO4 provided an improvement in the cell efficiency of up to 17.9% for phenylfluorone, 60% for pyrocatechol violet and 21.4% for alizarin dye.

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“…The latter strongly depends on the shape and size of the metallic nanostructures and the gaps between them, while porous silicon template helps to manage these properties. The family of the SERS-active nanostructures formed by metal deposition on porous silicon is very rich and includes metallic nanoparticles [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 ] or polydisperse particles [ 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 ], dendrites [ 49 , 54 , 83 , 84 ], nanovoids [ 85 ], and metallic oval-shaped NPs [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. Figure 2 presents schematic views of plasmonic structures that can be formed with a dependence on porous silicon morphology, doping type, the level of silicon, and the method and conditions of metal deposition.…”

Section: Why Porous Silicon Is a Good Template For Sers-active Submentioning

confidence: 99%

Progress in the Development of SERS-Active Substrates Based on Metal-Coated Porous Silicon

et al. 2018

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The present work gives an overview of the developments in surface-enhanced Raman scattering (SERS) with metal-coated porous silicon used as an active substrate. We focused this review on the research referenced to SERS-active materials based on porous silicon, beginning from the patent application in 2002 and enclosing the studies of this year. Porous silicon and metal deposition technologies are discussed. Since the earliest studies, a number of fundamentally different plasmonic nanostructures including metallic dendrites, quasi-ordered arrays of metallic nanoparticles (NPs), and metallic nanovoids have been grown on porous silicon, defined by the morphology of this host material. SERS-active substrates based on porous silicon have been found to combine a high and well-reproducible signal level, storage stability, cost-effective technology and handy use. They make it possible to identify and study many compounds including biomolecules with a detection limit varying from milli- to femtomolar concentrations. The progress reviewed here demonstrates the great prospects for the extensive use of the metal-coated porous silicon for bioanalysis by SERS-spectroscopy.

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Surface-enhanced Raman spectra of a complex of antimony with phenylfluorone and their interpretation

Cited by 7 publications

References 18 publications

Determination of Antimony by Surface-Enhanced Raman Spectroscopy

Determination of Antimony by Surface-Enhanced Raman Spectroscopy

Organic Dyes in Dye-Sensitized Solar Cells Featuring Back Reflector

Progress in the Development of SERS-Active Substrates Based on Metal-Coated Porous Silicon

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