Electrochemical tip-enhanced Raman spectroscopy imaging with 8 nm lateral resolution

Touzalin, Thomas; Joiret, S.; Lucas, Ivan T.; Maisonhaute, Emmanuel

doi:10.1016/j.elecom.2019.106557

Cited by 38 publications

(49 citation statements)

References 37 publications

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“…This expands to other electrode materials the importance of molecule-surface interactions in nanoelectrochemistry. Ren [216] and others [217,218] implemented in situ visualization from the solution side, allowing nm spatial Raman imaging of electrochemical processes with <10nm resolution at wider range of electrode surface (e.g. opaque solids).…”

Section: [531] Adsorbates and Samsmentioning

confidence: 99%

Electrochemistry and Optical Microscopy

Kanoufi

2021

Encyclopedia of Electrochemistry

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Electrochemistry exploits local current heterogeneities at various scales ranging from the micrometer to the nanometer. The last decade has witnessed unprecedented progress in the development of a wide range of electroanalytical techniques allowing to reveal and quantify such heterogeneity through multiscale and multifonctionnal operando probing of electrochemical processes. However most of these advanced electrochemical imaging techniques, employing scanning probes, suffer from either low imaging throughput or limited imaging size. In parallel, optical microscopies, which can image a wide field of view in a single snapshot, have made considerable progress in terms of sensitivity, resolution and implementation of detection modes. Optical microscopies are then mature enough to propose, with basic bench equipment, to probe in a non destructive way a wide range of optical (and therefore structural) properties of a material in situ, in real time: under operating conditions. They offer promising alternative strategies for quantitative high-resolution imaging of electrochemistry. The first sections recall the optical properties of materials and how they can be probed optically. They discuss fluorescence, Raman, surface plasmon resonance, scattering or refractive index. Then the different optical microscopes used to image electrochemical processes are examined along with some strategies to extract quantitative electrochemical information from optical images. Finally the last section reviews some examples of in situ imaging, at micro-to nanometer resolution, and quantification of electrochemical processes ranging from solution diffusion to the conversion of molecular interfaces or solids.]

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Section: [531] Adsorbates and Samsmentioning

confidence: 99%

Electrochemistry and Optical Microscopy

Kanoufi

2021

Encyclopedia of Electrochemistry

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“…Multimodal imaging could also push the limits on spatial resolution. In fact, tip-enhanced Raman spectroscopy (TERS) can attain 8 nm, 49 and optical photothermal infrared (O-PTIR) spectroscopy can reach 100 nm. 50 TERS molecular images at 8 nm spatial resolution can be achieved through simultaneous collection of Raman spectra and nanotopography information.…”

Section: Perspective and Future Directions Of Multimodal Imagingmentioning

confidence: 99%

“…TERS uses a gold or silver tip which scans the sample surface and, when illuminated, generates a locally amplified electromagnetic field resulting in an enhanced Raman spectra. 49 O-PTIR has beat the diffraction limit of conventional IR microscopes by modulating the changes of photothermal and photoacoustic effects from an intense IR beam source. 50 This enables collecting IR spectra in the order of hundreds of nanometers.…”

Section: Perspective and Future Directions Of Multimodal Imagingmentioning

confidence: 99%

Perspective on Multimodal Imaging Techniques Coupling Mass Spectrometry and Vibrational Spectroscopy: Picturing the Best of Both Worlds

et al. 2021

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Studies on complex biological phenomena often combine two or more imaging techniques to collect high-quality comprehensive data directly in situ , preserving the biological context. Mass spectrometry imaging (MSI) and vibrational spectroscopy imaging (VSI) complement each other in terms of spatial resolution and molecular information. In the past decade, several combinations of such multimodal strategies arose in research fields as diverse as microbiology, cancer, and forensics, overcoming many challenges toward the unification of these techniques. Here we focus on presenting the advantages and challenges of multimodal imaging from the point of view of studying biological samples as well as giving a perspective on the upcoming trends regarding this topic. The latest efforts in the field are discussed, highlighting the purpose of the technique for clinical applications.

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“…TERS provides subnanometer spatial resolution [75,76], which can be used to unravel secondary structure of protein aggregates [77][78][79], composition of cell membranes [80,81], molecule-substrate interactions [68,82,83], as well as elucidate electrochemical [69,[84][85][86][87][88] and photocatalytic processes [34,89,90] at the nanoscale. The image is adopted from the review by Kurouski et al [91].…”

Section: Tip-enhanced Raman Spectroscopy (Ters)mentioning

confidence: 99%

Nanoscale structural characterization of plasmon-driven reactions

Kurouski

2021

Nanophotonics

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Illumination of noble metal nanostructures by electromagnetic radiation induces coherent oscillations of conductive electrons on their surfaces. These coherent oscillations of electrons, also known as localized surface plasmon resonances (LSPR), are the underlying physical cause of the electromagnetic enhancement of Raman scattering from analytes located in a close proximity to the metal surface. This physical phenomenon is broadly known as surface-enhanced Raman scattering (SERS). LSPR can decay via direct interband, phonon-assisted intraband, and geometry-assisted transitions forming hot carriers, highly energetic species that are responsible for a large variety of chemical transformations. This review critically discusses the most recent progress in mechanistic elucidation of hot carrier-driven chemistry and catalytic processes at the nanoscale. The review provides a brief description of tip-enhanced Raman spectroscopy (TERS), modern analytical technique that possesses single-molecule sensitivity and angstrom spatial resolution, showing the advantage of this technique for spatiotemporal characterization of plasmon-driven reactions. The review also discusses experimental and theoretical findings that reported novel plasmon-driven reactivity which can be used to catalyze redox, coupling, elimination and scissoring reactions. Lastly, the review discusses the impact of the most recently reported findings on both plasmonic catalysis and TERS imaging.

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Electrochemical tip-enhanced Raman spectroscopy imaging with 8 nm lateral resolution

Cited by 38 publications

References 37 publications

Electrochemistry and Optical Microscopy

Electrochemistry and Optical Microscopy

Perspective on Multimodal Imaging Techniques Coupling Mass Spectrometry and Vibrational Spectroscopy: Picturing the Best of Both Worlds

Nanoscale structural characterization of plasmon-driven reactions

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Electrochemical tip-enhanced Raman spectroscopy imaging with 8 nm lateral resolution

Cited by 38 publications

References 37 publications

Electrochemistry and Optical Microscopy

Electrochemistry and Optical Microscopy

Perspective on Multimodal Imaging Techniques Coupling Mass Spectrometry and Vibrational Spectroscopy: Picturing the Best of Both Worlds

Nanoscale structural characterization of plasmon-driven reactions

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Product

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Electrochemical tip-enhanced Raman spectroscopy imaging with 8 nm lateral resolution