Laser assisted synthesis of anisotropic metal nanocrystals and strong light-matter coupling in decahedral bimetallic nanocrystals

Balcı, Fadime Mert; Sarisozen, Sema; Polat, Nahit; Guvenc, C. Meric; Karadeniz, Ugur; Tertemiz, Ayhan; Balci, Sinan

doi:10.1039/d0na00829j

Cited by 9 publications

(12 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the last 2 decades, the photochemical synthesis of bimetallic silver–gold NPs has witnessed limited developments when compared to their monometallic counterparts. A few recent works rely on visible light [ 134 , 135 ], but the very vast majority of designed protocols use UV irradiation to produce bimetallic Ag–Au NPs. The photochemically produced mono-metallic NPs may serve as a template, therefore forming the core, for the growth of the other metal, forming the shell.…”

Section: Synthesis Of Gold and Silver Nanoparticles Under Uv Light Irradiationmentioning

confidence: 99%

“…The photochemically produced mono-metallic NPs may serve as a template, therefore forming the core, for the growth of the other metal, forming the shell. The shell formation might happen under light (e.g., UV) irradiation [ 136 ] or simply owing to galvanic exchange [ 134 ]. These bimetallic NPs may form spheres [ 137 ], decahedrons [ 134 ], mixed nanostructures [ 138 ], and nanodendrites [ 139 ].…”

Section: Synthesis Of Gold and Silver Nanoparticles Under Uv Light Irradiationmentioning

confidence: 99%

“…The shell formation might happen under light (e.g., UV) irradiation [ 136 ] or simply owing to galvanic exchange [ 134 ]. These bimetallic NPs may form spheres [ 137 ], decahedrons [ 134 ], mixed nanostructures [ 138 ], and nanodendrites [ 139 ]. In terms of composition, these NPs can consist of alloys [ 137 , 140 ], nanotwins [ 137 , 141 ], core-shell structures [ 136 , 142 , 143 , 144 , 145 , 146 , 147 ], and hollow NPs [ 148 ].…”

Section: Synthesis Of Gold and Silver Nanoparticles Under Uv Light Irradiationmentioning

confidence: 99%

See 2 more Smart Citations

Photochemical Synthesis of Gold and Silver Nanoparticles—A Review

et al. 2021

View full text Add to dashboard Cite

Nanomaterials have supported important technological advances due to their unique properties and their applicability in various fields, such as biomedicine, catalysis, environment, energy, and electronics. This has triggered a tremendous increase in their demand. In turn, materials scientists have sought facile methods to produce nanomaterials of desired features, i.e., morphology, composition, colloidal stability, and surface chemistry, as these determine the targeted application. The advent of photoprocesses has enabled the easy, fast, scalable, and cost- and energy-effective production of metallic nanoparticles of controlled properties without the use of harmful reagents or sophisticated equipment. Herein, we overview the synthesis of gold and silver nanoparticles via photochemical routes. We extensively discuss the effect of varying the experimental parameters, such as the pH, exposure time, and source of irradiation, the use or not of reductants and surfactants, reagents’ nature and concentration, on the outcomes of these noble nanoparticles, namely, their size, shape, and colloidal stability. The hypothetical mechanisms that govern these green processes are discussed whenever available. Finally, we mention their applications and insights for future developments.

show abstract

Section: Synthesis Of Gold and Silver Nanoparticles Under Uv Light Irradiationmentioning

confidence: 99%

Section: Synthesis Of Gold and Silver Nanoparticles Under Uv Light Irradiationmentioning

confidence: 99%

Section: Synthesis Of Gold and Silver Nanoparticles Under Uv Light Irradiationmentioning

confidence: 99%

See 1 more Smart Citation

Photochemical Synthesis of Gold and Silver Nanoparticles—A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Note that AgNWs have two main plasmon polariton resonance modes; the longitudinal plasmon polariton mode (along the main axis of the nanowire) and the transverse plasmon polariton mode (in the plane perpendicular to the main axis of the nanowire) [33] . After 5 minutes of the first addition of AgNO 3 , the extinction spectrum shows a resonance peak at around 410 nm, which is most probably due to the localized surface plasmon polariton formation of nearly spherical silver nanoparticles [34] as also supported by SEM observations. In theoretical calculations shown in Figure 6b, the direction of the electric field or polarization of the incident light is in the direction perpendicular to the main axis of the nanorods.…”

Section: Resultsmentioning

confidence: 99%

Transition Metal Salt Promoted, Green, and High‐Yield Synthesis of Silver Nanowires for Flexible Transparent Conductive Electrodes

et al. 2021

Self Cite

View full text Add to dashboard Cite

Silver nanowires (AgNWs) have attracted considerable interest from both academia and industry owing to their excellent electrical, optical, and chemical properties. For large‐scale synthesis of AgNWs, the polyol method involving ethylene glycol, a toxic alcohol, has been widely used. We herein report on a facile, green, high yield, transition metal salt promoted, open atmosphere method for the synthesis of high quality AgNWs in a glycerol‐water mixture. We have shown that transition metal salts have a strong influence on the morphology of AgNWs. Importantly, in the presence of copper(II) chloride, AgNWs with a high aspect ratio of around 400 (length, 36 μm; diameter, 90 nm) were obtained. Additionally, for the first time, we have demonstrated AgNWs based flexible transparent conductive electrodes (TCEs) on poly(sodium 4‐styrenesulfonate) (PSS) treated polyethylene terephthalate (PET) substrate with a sheet resistance of 34 Ω/sq and transmittance of 91 % at 550 nm. The PSS layer on the PET substrate generated a highly hydrophilic surface, which boosts interaction of AgNWs with the PET surface. We envision that our results would play a significant role both in the synthesis of AgNWs with high aspect ratio and also in designing new rigid and flexible TCEs having high transmittance and low sheet resistance for applications especially in printable solar cells, organic light emitting diodes, and high performance flexible electronics.

show abstract

“…Bimetallic nanostructure-based plasmonic systems have a significant advantage over their monometallic counterparts due to the spectral tunability of the localized plasmon resonances arising from the compositional difference. − Herein, we investigate the strong plasmon-exciton coupling interactions of bimetallic gold-silver core-shell NRs with the J -aggregate of the cationic cyanine dye, 1,1′-diethyl-2,2′-cyanine iodide (Cy). The nanostructure with Au NRs as the core and silver as the shell (hereafter referred as Au@Ag NRs) is employed as an effective plasmonic material where the Ag shell thickness is used as the parameter for fine-tuning the plasmon resonance to establish a perfect resonance with the excitonic counterparts. , The ensemble-level plasmon-exciton coupling is monitored using UV–vis absorption spectroscopy, whereas DFM is adopted to monitor these interactions at the single-particle level.…”

Section: Introductionmentioning

confidence: 99%

Single-Particle Investigation of Plexcitons in Bimetallic Nanorods

et al. 2023

View full text Add to dashboard Cite

Coupling between plasmons and excitons results in the emergence of novel spectroscopic features directed by the interaction energy, e.g., strong coupling results in the formation of new bands, whereas weak coupling leads to the enhancement of spectroscopic signals. The plasmon-exciton interaction energies are often determined at the ensemble level studies in solution by tuning and detuning the plasmonic resonance frequency. Herein, we present an efficient method for determining the dispersion curves and the Rabi splitting energy of chromophore-bound bimetallic core-shell Au-Ag nanorods by recording their single-particle scattering spectra using dark-field scattering spectroscopy/microscopy in two ways: by placing them on a glass slide and a micron-reference transmission electron microscope grid. The resonance frequency of the plasmonic system is varied by changing the thickness of the silver shell and investigating the coupling with the J-aggregates of 1,1′-diethyl-2,2′-cyanine iodide. The single-particle scattering spectra of bare Au@Ag NRs are conveniently recorded by removing the bound chromophore using methanol. The ensemble-level investigations provided similar dispersion curves and interaction energy, further confirming the reliability of the present method. Moreover, the DFM-TEM method presented herein provides a good correlation between the experimental scattering spectra and the theoretical scattering spectra obtained using finite-difference time-domain simulations.

show abstract

Laser assisted synthesis of anisotropic metal nanocrystals and strong light-matter coupling in decahedral bimetallic nanocrystals

Abstract: The advances in colloid chemistry and nanofabrication allowed us to synthesize Noble monometallic and bimetallic nanocrystals with tunable optical properties in the visible and near infrared region of the electromagnetic...

Cited by 9 publications

References 34 publications

Photochemical Synthesis of Gold and Silver Nanoparticles—A Review

Photochemical Synthesis of Gold and Silver Nanoparticles—A Review

Transition Metal Salt Promoted, Green, and High‐Yield Synthesis of Silver Nanowires for Flexible Transparent Conductive Electrodes

Single-Particle Investigation of Plexcitons in Bimetallic Nanorods

Contact Info

Product

Resources

About