Raman Spectroscopy of Biomolecules at Electrode Surfaces

Bartlett, Philip N.; Mahajan, Sumeet

doi:10.1002/9783527644117.ch6

Cited by 2 publications

(2 citation statements)

References 325 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to its fingerprint molecular specificity and high sensitivity, surface-enhanced Raman scattering (SERS) is an established analytical tool for chemical and biological sensing capable of single-molecule detection. , A strong Raman signal can be generated from SERS-active platforms given the analyte is within the enhanced plasmon field generated near a noble-metal nanostructured substrate. The key requirement for generating strong plasmon resonances to provide this electromagnetic enhancement is an appropriate metal surface roughness.…”

mentioning

confidence: 99%

Optimized Vertical Carbon Nanotube Forests for Multiplex Surface-Enhanced Raman Scattering Detection

Oppenheimer

Hutter

Chen

et al. 2012

J. Phys. Chem. Lett.

Self Cite

View full text Add to dashboard Cite

The highly sensitive and molecule-specific technique of surface-enhanced Raman spectroscopy (SERS) generates high signal enhancements via localized optical fields on nanoscale metallic materials, which can be tuned by manipulation of the surface roughness and architecture on the submicrometer level. We investigate gold-functionalized vertically aligned carbon nanotube forests (VACNTs) as low-cost straightforward SERS nanoplatforms. We find that their SERS enhancements depend on their diameter and density, which are systematically optimized for their performance. Modeling of the VACNT-based SERS substrates confirms consistent dependence on structural parameters as observed experimentally. The created nanostructures span over large substrate areas, are readily configurable, and yield uniform and reproducible SERS enhancement factors. Further fabricated micropatterned VACNTs platforms are shown to deliver multiplexed SERS detection. The unique properties of CNTs, which can be synergistically utilized in VACNT-based substrates and patterned arrays, can thus provide new generation platforms for SERS detection.

show abstract

mentioning

confidence: 99%

Optimized Vertical Carbon Nanotube Forests for Multiplex Surface-Enhanced Raman Scattering Detection

Oppenheimer

Hutter

Chen

et al. 2012

J. Phys. Chem. Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Until 1974, the phenomenon of surfaceenhanced Raman scattering (SERS) on the rough silver electrode surface was discovered by Fleischmann et al, [2] and it has been found to possess important applications in environmental monitoring, [3,4] food safety, [5][6][7] chemical and biological sensing. [8,9] The SERS provides rich molecule fingerprint information through vibrational spectra, and exhibits high sensitivity, arriving at a single-molecule detection level. Additionally, it also overcomes the shortcomings of the traditional Raman spectroscopy, such as weak signal intensity and easy to interfer by fluorescence.…”

Section: Introductionmentioning

confidence: 99%

SERS activity of carbon nanotubes modified by silver nanoparticles with different particle sizes

et al. 2022

View full text Add to dashboard Cite

A two-dimensional (2D) surface-enhanced Raman scattering (SERS) substrate was fabricated by decorating carbon nanotube (CNT) films with Ag nanoparticles (AgNPs) in different sizes, via simple and low-cost chemical reduction and self-assembling methods. The change of Raman and SERS activity of carbon nanotubes/Ag nanoparticles (CNTs/AgNPs) composites with varying size of AgNPs was investigated with using rhodamine 6G (R6G) as a probe molecule. Meanwhile, the scattering cross section of AgNPs and the distribution of electric field of CNTs/AgNPs composite were simulated through finite difference time domain (FDTD) method. Surface plasmon resonance (SPR) wavelength is redshifted as the size of AgNPs increases, and the intensities of SERS and electric fields increase along with it. The experiment and simulation results showed a Raman scattering enhancement factor (EF) of 108 for the hybrid substrates.

show abstract

Raman Spectroscopy of Biomolecules at Electrode Surfaces

Cited by 2 publications

References 325 publications

Optimized Vertical Carbon Nanotube Forests for Multiplex Surface-Enhanced Raman Scattering Detection

Optimized Vertical Carbon Nanotube Forests for Multiplex Surface-Enhanced Raman Scattering Detection

SERS activity of carbon nanotubes modified by silver nanoparticles with different particle sizes

Contact Info

Product

Resources

About