Probing Optical Nonlinearities of Unconventional Glass Nanocomposites Made of Ionic Liquid Crystals and Bimetallic Nanoparticles.
Valentyn RudenkoAnatolii TolochkoSvitlana BugaychukDmytro ZhulaiGertruda KlimushevaGalina YaremchukTatyana MirnayaYuriy GarbovskiyPublished in: Nanomaterials (Basel, Switzerland) (2022)
In this paper, we report the synthesis and characterization of unconventional nanocomposites made of bimetallic nanoparticles dispersed in a liquid crystal glass. Core-shell bimetallic nanoparticles (Ag/Au or Au/Ag) and Ag-Au bimetallic nanoalloys are synthesized using cadmium alkanoate glass-forming liquid crystals as nanoreactors. Optical spectra of the produced glassy nanocomposites exhibit a distinctive absorption peak due to a surface plasmon resonance. In addition, these unusual materials demonstrate a strong nonlinear-optical response probed by means of the Z-scan technique. The use of near-infrared (1064 nm) and visible (532 nm) nanosecond laser pulses reveal a variety of nonlinear-optical mechanisms that depend on the composition of the studied nanocomposites. Our results indicate that metal alkanoate-based glass-forming ionic liquid crystals with embedded plasmonic nanoparticles are promising, yet they are overlooked photonic nanomaterials suitable for optical and nonlinear-optical applications.
Keyphrases
- ionic liquid
- high speed
- visible light
- reduced graphene oxide
- high resolution
- room temperature
- sensitive detection
- quantum dots
- computed tomography
- gold nanoparticles
- photodynamic therapy
- magnetic resonance imaging
- molecular dynamics simulations
- mass spectrometry
- magnetic resonance
- metal organic framework
- genome wide
- single cell
- density functional theory