Fabrication of stable network-like gold nanostructures in solution and their assessment as efficient NIR-SERS platforms for organic pollutants detection

Tira, Daniela-Simona; Potara, Monica; Aştilean, Simion

doi:10.1016/j.materresbull.2014.12.073

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…SERS substrates are generally tested using SERS-active dye molecules such as Rhodamine 6G and methylene blue [16,24]. Their practical use also extends to the characterization of cells, bacteria, proteins, drugs, DNA, organic pollutants and various chemical species in the present day [22,25e28].…”

Section: Introductionmentioning

confidence: 99%

Newly designed silver coated-magnetic, monodisperse polymeric microbeads as SERS substrate for low-level detection of amoxicillin

Kibar

Topal

Dâna

et al. 2016

Journal of Molecular Structure

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We report the preparation of silver-coated magnetic polymethacrylate coreeshell nanoparticles for use in surface-enhanced Raman scattering based drug detection. Monodisperse porous poly (mono-2-(methacryloyloxy)ethyl succinate-co-glycerol dimethacrylate), poly (MMES-co-GDMA) microbeads of ca. 5 mm diameter were first synthesized through a multistage microsuspension polymerization technique to serve as a carboxyl-bearing core region. Microspheres were subsequently magnetized by the coprecipitation of ferric ions, aminated through the surface hydroxyl groups and decorated with Au nanoparticles via electrostatic attraction. An Ag shell was then formed on top of the Au layer through a seed-mediated growth process, resulting in micron-sized monodisperse microbeads that exhibit Raman enhancement effects due to the roughness of the Ag surface layer. The coreeshell microspheres were used as a new substrate for the detection of amoxicillin at trace concentrations up to 10 À8 M by SERS. The proposed SERS platform can be evaluated as a useful tool for the follow-up amoxicillin pollution and lowlevel detection of amoxicillin in aqueous media.

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Section: Introductionmentioning

confidence: 99%

Newly designed silver coated-magnetic, monodisperse polymeric microbeads as SERS substrate for low-level detection of amoxicillin

Kibar

Topal

Dâna

et al. 2016

Journal of Molecular Structure

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“…Figure 2 a shows the characteristic peaks of MO at Raman shifts of ~1111, 1146, 1192, 1374, and 1590 cm −1 , corresponding to the C-C bending, C-S stretching, N-N in-plane bending, C-C stretching, and C-C in-plane bending modes, respectively [ 27 – 29 ]. Figure 2 b shows the characteristic peaks of MB at Raman shifts of ~449 and ~502 cm −1 of the C-N-C skeletal bending mode, ~1181 cm −1 of the C-N stretching mode, ~1400 cm −1 due to the deformation of CH3, and ~1624 cm −1 due to the stretching vibration of the ring, respectively [ 30 – 32 ]. Figure 2 c shows the characteristic peaks of CV at Raman shifts of ~420, 523, 803, 910, 1174, 1383, and 1581 cm −1 , corresponding to the phenyl-C-phenyl out-of-plane bending, C-N-C bending, phenyl-H out-of-plane bending, phenyl ring breathing, C-H in-plane ring deformation, C-N stretching, and phenyl ring stretching vibration, respectively [ 33 – 36 ].…”

Section: Resultsmentioning

confidence: 99%

Compositional Analysis of Ternary and Binary Chemical Mixtures by Surface-Enhanced Raman Scattering at Trace Levels

Hou

Huang

et al. 2015

Nanoscale Res Lett

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Surface-enhanced Raman scattering has been proven a powerful means in the fast detection and recognition of chemicals at trace levels, while quantitative analysis especially the compositional analysis of trace chemical mixtures remains a challenge. We report here a “triangle-rule” based on the principal component analysis (PCA) of surface-enhanced Raman scattering spectra, to calculate the composition of individual component of ternary chemical mixtures at trace levels, which can be simplified into the “balance-rule” for binary mixtures. We demonstrated the validity of the triangle-rule and balance-rule in estimating the composition of ternary and binary mixtures of methyl orange, methylene blue, and crystal violet with different molecular structures, and the validity for ternary and binary mixtures of three isomers of monochlorobiphenyl with very similar molecular structures. This idea might be also applicable to mixtures of more components at the trace levels.

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“…S4, Supporting information). In the context of this work, it was found as particularly useful because it is well‐known to adsorb strongly to textiles such as cotton, wool and silk and on the other side several Raman studies have reported a strong SERS signal when it is used as the analyte …”

Section: Surface Enhanced Raman Scattering Studies Using Ag/linen Nanmentioning

confidence: 99%

SERS and Raman imaging as a new tool to monitor dyeing on textile fibres

Fateixa

Wilhelm

Nogueira

et al. 2016

J. Raman Spectrosc.

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Textile fibres containing Ag nanoparticles have been widely explored for a number of antimicrobial fabrics. Moreover, it is well-known that textile dyeing is a critical stage in the manufacture thereof. This research shows that surface enhanced Raman scattering (SERS) and Raman imaging can be used with advantage in the monitoring of this process. Using Ag containing linen fibres stained with methylene blue (MB), it was possible to map the local distribution of the MB dye in the fibres by Raman imaging. MB was selected as the SERS molecular probe and as a model dye. Composites of linen fibres and Ag nanoparticles were prepared by distinct methods and used as SERS substrates in order to evaluate the effect of the preparative method on the Raman images. Our results demonstrate that by using Raman imaging associated to the presence of Ag nanoparticles, it is possible to distinguish the local distribution of the dye on the textile surface. This investigation allows to foreseeing the use of this technique in terms of quality control of Ag containing fabrics, which is a market in great expansion.

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Fabrication of stable network-like gold nanostructures in solution and their assessment as efficient NIR-SERS platforms for organic pollutants detection

Cited by 4 publications

References 33 publications

Newly designed silver coated-magnetic, monodisperse polymeric microbeads as SERS substrate for low-level detection of amoxicillin

Newly designed silver coated-magnetic, monodisperse polymeric microbeads as SERS substrate for low-level detection of amoxicillin

Compositional Analysis of Ternary and Binary Chemical Mixtures by Surface-Enhanced Raman Scattering at Trace Levels

SERS and Raman imaging as a new tool to monitor dyeing on textile fibres

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