Towards multi-molecular surface-enhanced infrared absorption using metal plasmonics

Abstract

Surface-enhanced infrared absorption (SEIRA) leads to a largely improved detection of polar molecules, compared to standard infrared absorption. The enhancement principle is based on localized surface plasmon resonances of the...

Combined Surface-Enhanced Raman and Infrared Absorption Spectroscopies for Streamlined Chemical Detection of Polycyclic Aromatic Hydrocarbon-Derived Compounds

“…In this case, the sensitivity of SERS and SEIRA for PACs is improved by modification of the plasmonic nanoparticles with a SAM capture layer, consisting of short carbon chains with a terminal functional group. Other studies have employed MOFs or polymer matrices as capture layers on the surface of plasmonic nanostructures . In comparison, a SAM offers much less interference in the SEIRA spectrum as well as more general interactions, allowing the detection of larger, more diverse sets of analytes.…”

Total electrification of large-scale nanophotonic arrays by frictional charges

“…Our future works will consider the establishment of a stronger correlation between the observed electrical generation/detection (by TENGs) and optical modulation of LSPR (of Au nanoparticles) via control over the nanoparticle size/distribution which limits the higher order modes. On a similar basis, other optical systems which require light sources and spectrophotometers, such as SERS and surface-enhanced infrared absorption (SEIRA) [33][34][35][36][37][38] can potentially be electrified. Therefore, our work serves as a benchmark for the electrification of optical systems using TENGs in a self-powered manner.…”

Structural Control of Plasmon Resonance in Molecularly Linked Metal Oxide Nanocrystal Gel Assemblies

“…For instance, it can be utilized to create optical filters with adjustable spectral windows or achieve precise energy matching for nonlinear optics . Structurally distinct gels can also be designed to optimize near-field enhanced processes like plasmon-enhanced fluorescence, surface-enhanced Raman scattering (SERS), and surface-enhanced infrared absorption (SEIRA). ,,, We can envision gels whose structure and optical properties respond to other types of stimuli by incorporating linking chemistries sensitive to light, pH change, mechanical strain, or magnetic fields. ,,− Beyond plasmonic properties, such assemblies could have diverse collective behaviors, including rheological characteristics, superparamagnetism, and Förster resonance energy transfer (FRET), depending on the choice of nanocrystal and molecular components.…”