Self-Assembled Ligand-Capped Plasmonic Au Nanoparticle Films in the Kretschmann Configuration for Sensing of Volatile Organic Compounds

Borah, Rituraj; Smets, Jorid; Ninakanti, Rajeshreddy; Tietze, Max L.; Ameloot, Rob; Chigrin, Dmitry N.; Bals, Sara; Lenaerts, Silvia; Verbruggen, Sammy W.

doi:10.1021/acsanm.2c02524

Cited by 17 publications

(10 citation statements)

References 63 publications

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“…When plasmonic nanostructures are arranged periodically, electrodynamic coupling of the nanostructures enhances the light-matter interaction as compared to isolated nanostructures 1 , 2 . Thus, periodic arrays of nanostructures have gained increasing attention in recent years for the application in light driven processes such as solar energy harvesting 3 , photovoltaics 4 , photocatalysis 5 , 6 , SERS (surface-enhanced Raman spectroscopy) 7 , fluorescence 8 , SEIRA (surface-enhanced infrared absorption spectroscopy) 9 , sensing 10 , photoemission and photodetection 11 , etc. The plasmonic enhancement of these various processes can occur through different mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Plasmon resonance of gold and silver nanoparticle arrays in the Kretschmann (attenuated total reflectance) vs. direct incidence configuration

Borah

Ninakanti

Bals

et al. 2022

Sci Rep

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While the behaviour of plasmonic solid thin films in the Kretschmann (also known as Attenuated Total Reflection, ATR) configuration is well-understood, the use of discrete nanoparticle arrays in this optical configuration is not thoroughly explored. It is important to do so, since close packed plasmonic nanoparticle arrays exhibit exceptionally strong light-matter interactions by plasmonic coupling. The present work elucidates the optical properties of plasmonic Au and Ag nanoparticle arrays in both the direct normal incidence and Kretschmann configuration by numerical models, that are validated experimentally. First, hexagonal close packed Au and Ag nanoparticle films/arrays are obtained by air–liquid interfacial assembly. The numerical models for the rigorous solution of the Maxwell’s equations are validated using experimental optical spectra of these films before systematically investigating various parameters. The individual far-field/near-field optical properties, as well as the plasmon relaxation mechanism of the nanoparticles, vary strongly as the packing density of the array increases. In the Kretschmann configuration, the evanescent fields arising from p- and s-polarized (or TM and TE polarized) incidence have different directional components. The local evanescent field intensity and direction depends on the polarization, angle of incidence and the wavelength of incidence. These factors in the Kretschmann configuration give rise to interesting far-field as well as near-field optical properties. Overall, it is shown that plasmonic nanoparticle arrays in the Kretschmann configuration facilitate strong broadband absorptance without transmission losses, and strong near-field enhancement. The results reported herein elucidate the optical properties of self-assembled nanoparticle films, pinpointing the ideal conditions under which the normal and the Kretschmann configuration can be exploited in multiple light-driven applications.

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Section: Introductionmentioning

confidence: 99%

Plasmon resonance of gold and silver nanoparticle arrays in the Kretschmann (attenuated total reflectance) vs. direct incidence configuration

Borah

Ninakanti

Bals

et al. 2022

Sci Rep

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“…[183] [184] For example, among different VOCs, certain aldehydes in breath have been identified as biomarkers of lung cancer [185] The combination of MOFs with self-assembled plasmonic nanoparticles facilitates high absorption of the probe molecules in the porous MOF, where their SERS intensity is amplified by the strong nearfield enhancement of coupled plasmonic response of the nanoparticles, Figure 15 (e). Recently, Borah et al [186] have shown an alternative strategy for the detection of VOCs by self-assembled Au nanoparticle films in the Kretschmann (i.e. Attenuated Total Reflection, ATR) configuration, where the adsorbed VOCs on the nanoparticles can be detected by the change in the optical intensities due to the change in refractive index, Figure 15 (f).…”

Section: 14mentioning

confidence: 99%

“…It is shown that further improvement in sensitivity can be achieved by the use of ellipsometry instead of intensity based optical spectroscopy. [186] Refractive index based sensing by plasmonic nanostructures is based on the change in the optical intensities or plasmon resonance positions (usually a red shift) due to the change in the refractive index in the surrounding medium of the nanoparticles after interaction with the analyte. Naturally, the adsorption of biomolecules (in liquid phase), gases, VOCs, etc., on the plasmonic nanostructure leads to this change in the refractive index.…”

Section: 14mentioning

confidence: 99%

“…Reprinted with permission [184] © 2022 John Wiley & Sons. (f) Schematic of ellipsometric VOC sensing by self-assembled Au nanoparticle films in the Kretschmann (or ATR) configuration: the optical response is driven by the evanescent field (varies with the polarization) that interacts with the nanoparticles and the surrounding environment (not to scale).Reprinted with permission [186] © 2022, American Chemical Society.…”

Section: 14mentioning

confidence: 99%

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A Review on Self-Assembled Colloidal Nanoparticle Clusters, Patterns and Films: Emerging Synthesis Techniques and Applications

Borah

Minja

et al. 2022

Preprint

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The colloidal synthesis of functional nanoparticles have gained tremendous scientific attention in the last decades. In parallel to these advancements, another rapidly growing area is the self-assembly of these colloidal nanoparticles into greater periodic arrangements. Firstly, the organization of nanoparticles into ordered structures is important for obtaining functional interfaces that extend or even amplify the intrinsic properties of the constituting nanoparticles at a larger scale. The synthesis of large-scale interfaces using complex or intricately designed nanostructures as building blocks, requires highly controllable self-assembly techniques down to the nanoscale. In certain cases, for example, when dealing with plasmonic nanoparticles, the assembly of the nanoparticles further enhances their properties by coupling phenomena. In other cases, the process of self-assembly itself is useful in the final application such as in sensing and drug delivery, amongst others. In view of the growing importance of this field, this review provides a comprehensive overview of the recent developments in the field of self-assembly of different nanostructures and their applications. For clarity, the self-assembled nanostructures are classified into two broad categories: finite clusters/patterns, and infinite films. Different state-of-the-art techniques to obtain these nanostructures are discussed in detail, before discussing the applications where the self-assembly significantly enhances the performance of the process.

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“…The peak and width values of the SPR absorption spectra are very sensitive to the variation of the sensing layer refractive index. As a result, this configuration can determine the chemical bonds formed between the molecules (for example, biomolecules BioMs) and the sensor (AgNPs). − …”

Section: Introductionmentioning

confidence: 99%

LSPR of Nanoparticles Inside Strong Absorbent Medium

Habibi Masheli,

Eyvazi,

Aghdaee

et al. 2023

J. Phys. Chem. C

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Self-Assembled Ligand-Capped Plasmonic Au Nanoparticle Films in the Kretschmann Configuration for Sensing of Volatile Organic Compounds

Abstract: fabrication methods for volatile organic compound (VOC) sensing applications.

Cited by 17 publications

References 63 publications

Plasmon resonance of gold and silver nanoparticle arrays in the Kretschmann (attenuated total reflectance) vs. direct incidence configuration

Plasmon resonance of gold and silver nanoparticle arrays in the Kretschmann (attenuated total reflectance) vs. direct incidence configuration

A Review on Self-Assembled Colloidal Nanoparticle Clusters, Patterns and Films: Emerging Synthesis Techniques and Applications

LSPR of Nanoparticles Inside Strong Absorbent Medium

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