Combining surface-accessible Ag and Au colloidal nanomaterials with SERS for in situ analysis of molecule–metal interactions in complex solution environments

Li, Chunchun; Zhang, Yingrui; Ye, Ziwei; Bell, Steven E. J.; Xu, Yikai

doi:10.1038/s41596-023-00851-6

Cited by 30 publications

(16 citation statements)

References 90 publications

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“…N SERS and N NR are the average number of adsorbed molecules that can be detected in the area irradiated by the Raman laser under conventional Raman and SERS measurement conditions, respectively. The calculated EF values are affected by the SERS substrate, the excitation wavelength, and the type of probe molecule. ,, In practical SERS detection for a specific target analyte, the wavelength of the excitation light is typically fixed. Hence, it becomes imperative for researchers to design and prepare suitable SERS substrates with high SERS enhancement, making SERS an effective analytical technique in the field of single molecule detection.…”

Section: Enhancement Mechanisms and Advantages Of Aao-based Sers Subs...mentioning

confidence: 99%

“…This property facilitates their susceptibility to plasma collective vibration under specific energy laser excitations. 18 The optical characteristics of nanostructured Au and Ag exhibit distinct features, prominently showcasing the surface plasmon resonance effect. This phenomenon largely contributes to the widespread utilization of Au and Ag metals in highly sensitive SERS applications.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Metals such as Ag, Au, and Cu exhibit dissociative excitation resonances across a broad spectrum range encompassing visible and near-infrared wavelengths. This property facilitates their susceptibility to plasma collective vibration under specific energy laser excitations . The optical characteristics of nanostructured Au and Ag exhibit distinct features, prominently showcasing the surface plasmon resonance effect.…”

Section: Introductionmentioning

confidence: 99%

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Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Wu,

Sha,

et al. 2024

ACS Appl. Nano Mater.

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As a promising spectroscopic technique, surface enhanced raman spectroscopy (SERS) has been intensively used in bio/chemical sensing, attributing to its unique advantages of ultrasensitive and accurate detection of trace amounts of analytes, high specific fingerprint-like features, fast response, and noninvasive sensing. The robustness and consistency of SERS signals in practical analytical applications highly rely on the composition, structural morphology, and uniformity of SERS substrates. These factors play a pivotal role in determining the intensity and reproducibility of the detected signals. SERS substrates based on ordered nanostructures that are fabricated from anodic aluminum oxide (AAO)-templateassisted approaches are of significant interest due to their cost effectiveness, scalability, precise structural control, and exceptionally ordered features. In this review, recent progress in SERS substrates with high sensitivity and reproducibility prepared from AAO templates is highlighted. We emphasize the optimization strategies toward achieving efficient SERS-active substrates by fine-tuning the size, composition, and morphology of AAO-derived ordered nanostructures. Furthermore, we delve into the discussion of flexible and smart SERS substrates, while also exploring key aspects pertinent to further amplifying SERS signals. Overall, this review aims to offer insights into the future integration of the AAO templates technique with SERS, providing crucial perspectives for forthcoming research in this field.

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Section: Enhancement Mechanisms and Advantages Of Aao-based Sers Subs...mentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Wu,

Sha,

et al. 2024

ACS Appl. Nano Mater.

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“…Plasmonic metal nanomaterials have unique physical and chemical properties, such as local surface plasmon resonance (LSPR) effect, surface-enhanced Raman scattering, and chemical catalysis. − Those intriguing characteristics facilitate plasmonic metal nanomaterials to be superior sensing probes and substrates in environmental and food monitoring as well as disease diagnosis. − On the basis of the sensitive and target-mediated LSPR response of Au nanoparticles (NPs), such materials have been remarkably studied and widely applied as colorimetric probes in the fields of chemical analysis and biosensing. , …”

Section: Introductionmentioning

confidence: 99%

Mercury-Mediated Epitaxial Accumulation of Au Atoms for Stained Hydrogel-Improved On-Site Mercury Monitoring

Zhu,

Wang,

Luo

et al. 2023

Anal. Chem.

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“…SHI irradiation is a crucial method for altering the physical characteristics of materials and is frequently used to modify matter on the nanoscale. With amorphous-SiO 2 as the host matrix, one of the significant impacts of SHI exposure on a variety of metallic species, viz., Au, − Ag, , Co, Ni, − Zn, V, Pt, FePt, , FeCo, ,, and metal alloys, has been observed to be the elongation or ion-shaping of metal NPs. ,, Recent research has looked into the deformation strategy of spherical Au NPs ( diameters, ∼ca. 5–80 nm) implanted in SiO 2 when exposed to 50 MeV I 9+ SHI irradiation .…”

Section: Introductionmentioning

confidence: 99%

Tuning LSPR of Thermal Spike-Induced Shape-Engineered Au Nanoparticles Embedded in Si₃N₄ Thin-Film Matrix for SERS Applications

Malik,

Sarker,

Kumar

et al. 2023

ACS Appl. Mater. Interfaces

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While gold nanoparticles (Au NPs) are widely used as surface-enhanced Raman spectroscopy (SERS) substrates, their agglomeration and dynamic movement under laser irradiation result in the major drawback in SERS applications, viz., the repeatability of SERS signals. We tune the optical and structural properties of sizeand shape-modified Au NPs embedded in a thin silicon nitride (Si 3 N 4 ) matrix by intense electronic excitation with swift heavy ion (SHI) irradiation with the aim of overcoming this classical SERS disadvantage. We demonstrate the shape evolution of a single layer of Au NPs inserted between amorphous Si 3 N 4 thin films under fluences of 120 MeV Au 9+ ions ranging between 1 × 10 11 and 1 × 10 13 ions cm −2 . This shape modification results in the gradual blue shift of the localized surface plasmon resonance (LSPR) dip until 1 × 10 12 ions/ cm 2 and then a sudden diminishment at 1 × 10 13 ions/cm 2 . Finite domain time difference (FDTD) simulations further justify our experimental optical spectra. The dynamical NP aggregation and dissolution, in addition to NP elongation and deformation at different fluences, are noted from 2D grazing incidence small-angle X-ray scattering (GISAXS) profiles, as well as cross-sectional transmission electron microscopy (X-TEM). The systematic shape evolution of metal NPs embedded in the insulating matrix is shown to be due to thermal spike-induced localized melting and a localized pressure hike upon SHI irradiation. Utilizing this specific control over the characteristics of Au NPs, viz., shape, size, interparticle gap, and corresponding optical response via SHI irradiation, we demonstrate their applications as very stable SERS substrates, where the separation between NPs and analyte does not alter under laser illumination. Thus, these irradiated SERS active substrates with controlled NP size and gap provide the optimal conditions for creating localized electromagnetic hotspots that amplify the SERS signals, which do not alter with time or laser exposure. We found that the film irradiated with 1 × 10 11 exhibits the highest SERS intensity due to its optimal NP size distribution and shape. Thus, not only our study provides a SERS substrate for stable and repeatable signals but also the understanding depicted here opens new research avenues in designing SERS substrates, photovoltaics, optoelectronic devices, etc. with ion beam irradiation.

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Combining surface-accessible Ag and Au colloidal nanomaterials with SERS for in situ analysis of molecule–metal interactions in complex solution environments

Cited by 30 publications

References 90 publications

Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Mercury-Mediated Epitaxial Accumulation of Au Atoms for Stained Hydrogel-Improved On-Site Mercury Monitoring

Tuning LSPR of Thermal Spike-Induced Shape-Engineered Au Nanoparticles Embedded in Si₃N₄ Thin-Film Matrix for SERS Applications

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Combining surface-accessible Ag and Au colloidal nanomaterials with SERS for in situ analysis of molecule–metal interactions in complex solution environments

Cited by 30 publications

References 90 publications

Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Ordered Anodic Aluminum Oxide-Based Nanostructures for Surface-Enhanced Raman Scattering: A Review

Mercury-Mediated Epitaxial Accumulation of Au Atoms for Stained Hydrogel-Improved On-Site Mercury Monitoring

Tuning LSPR of Thermal Spike-Induced Shape-Engineered Au Nanoparticles Embedded in Si3N4 Thin-Film Matrix for SERS Applications

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Product

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Tuning LSPR of Thermal Spike-Induced Shape-Engineered Au Nanoparticles Embedded in Si₃N₄ Thin-Film Matrix for SERS Applications