Spectroscopic investigations, concentration dependent SERS, and molecular docking studies of a benzoic acid derivative

Gamberini, Maria Cristina; Mary, Y. Shyma; Mary, Y. Sheena; Krátký, Martin; Baraldi, Cecilia

doi:10.1016/j.saa.2020.119265

Cited by 25 publications

(11 citation statements)

References 78 publications

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“…The left and the right columns for each concentration correspond to the "n" and "s" flowers, respectively. -1 ) The concentration dependence of SERS EF is a phenomenon found for different types of substrates and a wide range of analytes [41,42]. Typically, SERS is less effective for higher concentration due to the saturation of adsorption of the analyte molecules on the substrate.…”

Section: Resultsmentioning

confidence: 99%

Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

Ivanov¹,

Tsutsumanova²,

Todorov³

et al. 2021

Preprint

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Micro- and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They are being extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delivery agents, for water purification and so on. Flowerlike objects, due to their highly irregular surface, may act also as plasmonic materials, providing resonant coupling between optical waves and surface plasmon excitations. This fact infers for the possibility to use micro- and nanoflowers as effective surface-enhanced Raman scattering (SERS) substrate materials. Here, we report on the design and Raman enhancement properties of silver flowerlike structures, deposited on aluminum surface. A simple and cost-effective fabrication method is described, which leads to SERS substrates of high developed surface area. The morphology of the silver flowers on a nanoscale is characterized by self-organized quasiperiodic stacks of nanosheets, which act as plasmonic cavity-resonators. The substrates were tested against rhodamine-6G (R6G) water solutions of concentration varying between 10–3 M and 10–7 M. Optimal SERS enhancement factors of up to 105 were established at R6G concentrations in the range 10–6 – 10–7 M.

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Section: Resultsmentioning

confidence: 99%

Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

Ivanov¹,

Tsutsumanova²,

Todorov³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Again, the two types of samples give qualitatively similar results, showing a maximum at low wavenumbers, a pronounced dip for the mode at 1126 cm −1 followed by gradual increase for the modes around ≈ 1300 and 1600 cm −1 . The concentration dependence of SERS EF is a phenomenon found for different types of substrates and a wide range of analytes [44,45]. Typically, SERS is less effective for higher concentration due to the saturation of adsorption of the analyte molecules on the substrate.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, this structure is equivalent to a system of coupled nanocavity resonators, which transmits the SP waves along the inner silver-air interface in depth of the grooves. The resonant frequencies of The concentration dependence of SERS EF is a phenomenon found for different types of substrates and a wide range of analytes [44,45]. Typically, SERS is less effective for higher concentration due to the saturation of adsorption of the analyte molecules on the substrate.…”

Section: Resultsmentioning

confidence: 99%

Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

et al. 2021

View full text Add to dashboard Cite

Micro- and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They have been extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delivery agents, for water purification, and so on. Flowerlike objects, due to their highly irregular surface, may act also as plasmonic materials, providing resonant coupling between optical waves and surface plasmon excitations. This fact allows us to infer the possibility to use micro- and nanoflowers as effective surface-enhanced Raman scattering (SERS) substrate materials. Here, we report on the design and Raman enhancement properties of silver flowerlike structures, deposited on aluminum surface. A simple and cost-effective fabrication method is described, which leads to SERS substrates of high developed surface area. The morphology of the silver flowers on a nanoscale is characterized by self-organized quasiperiodic stacks of nanosheets, which act as plasmonic cavity resonators. The substrates were tested against rhodamine-6G (R6G) water solutions of concentration varying between 10−3 M and 10−7 M. Optimal SERS enhancement factors of up to 105 were established at R6G concentrations in the 10−6–10−7 M range.

show abstract

“…Possible adsorption regions are represented by the red negatively charged sites, which are the regions of electrophilic reaction, in the surface adsorption reaction of molecules with metals. 28,29 It is a visual representation of the number and strength of the adsorption sites and provides a reference for analyzing the adsorption behavior of molecules.…”

Section: Molecular Adsorption To the Agnt Surfacementioning

confidence: 99%