Surface-enhanced Raman scattering (SERS) study on Rhodamine B adsorbed on different substrates

Sun, Chunsheng; Wang, M. L.; Feng, Qi; Liu, W.; Xu, Chunxiang

doi:10.1134/s0036024415020338

Cited by 50 publications

(35 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The presence of the nanobowls significantly affects the Raman signal of the Rho B with no shift of the peaks position of the normal sample. Figure 7A shows that the SERS phenomenon is dominated by at least six peaks located at 621, 1201, 1277, 1358, 1505 and 1648 cm −1 , which corresponds well to those reported for the Rho B in previous work 40, 41 . The EFs were found to be around 10 5 -10 6 (Table S1), which is similar to the published work with other nanoparticles 42 .…”

Section: Resultssupporting

confidence: 88%

Magnetically-responsive silica–gold nanobowls for targeted delivery and SERS-based sensing

Mo¹,

Landon

Santacruz-Gómez

et al. 2016

Nanoscale

View full text Add to dashboard Cite

Composite colloidal structures with multi-functional properties have wide applications in targeted delivery of therapeutics and imaging contrast molecules and high-throughput molecular bio-sensing. We have constructed a multifunctional composite magnetic nanobowl using bottom-up approach on an asymmetric silica/polystyrene Janus template consisting of a silica shell around a partially exposed polystyrene core. The nanobowl consists of a silica bowl and a gold exterior shell with iron oxide magnetic nanoparticles sandwiched between the silica and gold shells. Nanobowls were characterized by electron microscopy, atomic force microscopy, magnetometry, vis-NIR and FTIR spectroscopy. Magnetically vectored transport of these nanobowls was ascertained by time-lapsed imaging of their flow in fluid through a porous hydrogel under a defined magnetic field. These magnetically-responsive nanobowls show distinct surface enhanced Raman spectroscopy (SERS) imaging capability. PEGylated magnetically-responsive nanobowls show size-dependent cellular uptake in-vitro.

show abstract

Section: Resultssupporting

confidence: 88%

Magnetically-responsive silica–gold nanobowls for targeted delivery and SERS-based sensing

Mo¹,

Landon

Santacruz-Gómez

et al. 2016

Nanoscale

View full text Add to dashboard Cite

show abstract

“…Four peaks in total were selected and plotted. The four peaks are at 621, 1278, 1357, and 1505 cm −1 , which correspond to the C–C–ring in-plane bend, C–O–C stretching, aromatic ring vibrations, and C–C stretching, respectively [24,25,26]. The SERS intensity increases until the thickness of the gold deposit is 200 nm, and then begins to decrease from when it exceeds 200 nm.…”

Section: Resultsmentioning

confidence: 99%

Optimization of ZnO Nanorod-Based Surface Enhanced Raman Scattering Substrates for Bio-Applications

et al. 2019

View full text Add to dashboard Cite

Nanorods based on ZnO for surface enhanced Raman spectroscopy are promising for the non-invasive and rapid detection of biomarkers and diagnosis of disease. However, optimization of nanorod and coating parameters is essential to their practical application. With the goal of establishing a baseline for early detection in biological applications, gold-coated ZnO nanorods were grown and coated to form porous structures. Prior to gold deposition, the grown nanorods were 30–50 nm in diameter and 500–600 nm in length. Gold coatings were grown on the nanorod structure to a series of thicknesses between 100 and 300 nm. A gold coating of 200 nm was found to optimize the Rhodamine B model analyte signal, while performance for rat urine depended on the biomarkers to be detected. These results establish design guidelines for future use of Au-ZnO nanorods in the study and early diagnosis of inflammatory diseases.

show abstract

“…SERS is composed of two widely accepted mechanisms: An electromagnetic mechanism (EM) and a chemical mechanism (CM). SERS in the EM mode is based on the local electromagnetic field that is contributed to by the electromagnetic enhancement of the surface plasmons generated upon light irradiation [ 2 , 3 , 4 , 5 ]. The EM model is often set up using a metal ion coated on the substrate with proper micro-nano scaled geometries.…”

Section: Introductionmentioning

confidence: 99%

Surface Enhanced Raman Scattering in Graphene Quantum Dots Grown via Electrochemical Process

et al. 2021

View full text Add to dashboard Cite

Graphene Quantum dots (GQDs) are used as a surface-enhanced Raman substrate for detecting target molecules with large specific surface areas and more accessible edges to enhance the signal of target molecules. The electrochemical process is used to synthesize GQDs in the solution-based process from which the SERS signals were obtained from GQDs Raman spectra. In this work, GQDs were grown via the electrochemical process with citric acid and potassium chloride (KCl) electrolyte solution to obtain GQDs in a colloidal solution-based format. Then, GQDs were characterized by transmission electron microscope (TEM), Fourier-transform infrared spectroscopy (FTIR), and Raman spectroscopy, respectively. From the results, SERS signals had observed via GQDs spectra through the Raman spectra at D (1326 cm−1) and G (1584 cm−1), in which D intensity is defined as the presence of defects on GQDs and G is the sp2 orbital of carbon signal. The increasing concentration of KCl in the electrolyte solution for 0.15M to 0.60M demonstrated the increment of Raman intensity at the D peak of GQDs up to 100 over the D peak of graphite. This result reveals the potential feasibility of GQDs as SERS applications compared to graphite signals.

show abstract

Surface-enhanced Raman scattering (SERS) study on Rhodamine B adsorbed on different substrates

Cited by 50 publications

References 34 publications

Magnetically-responsive silica–gold nanobowls for targeted delivery and SERS-based sensing

Magnetically-responsive silica–gold nanobowls for targeted delivery and SERS-based sensing

Optimization of ZnO Nanorod-Based Surface Enhanced Raman Scattering Substrates for Bio-Applications

Surface Enhanced Raman Scattering in Graphene Quantum Dots Grown via Electrochemical Process

Contact Info

Product

Resources

About