Broad band tuning of the plasmonic resonance of gold nanoparticles hosted in self-organized soft materials

2011 ◽  
Vol 21 (47) ◽  
pp. 18967 ◽  
Author(s):  
Luciano De Sio ◽  
Roberto Caputo ◽  
Ugo Cataldi ◽  
Cesare Umeton
Keyword(s):  
Gold Nanoparticles ◽  
Broad Band ◽  
Soft Materials ◽  
Plasmonic Resonance ◽  
Self Organized

Plasmonic resonance enhanced photoelectrochemical aptasensors based on g-C3N4/Bi2MoO6

2018 ◽  
Vol 54 (52) ◽  
pp. 7199-7202 ◽  
Author(s):  
Zhenli Qiu ◽  
Jian Shu ◽  
Dianping Tang
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Visible Light Irradiation ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Light Irradiation ◽  
Localized Surface Plasmon ◽  
Plasmonic Resonance

An in-depth exploration associated with localized surface plasmon resonance between g-C3N4/Bi2MoO6 and gold nanoparticles has been conducted for highly efficient photoelectrochemical aptasensors under ultraviolet and visible light irradiation.

Self-organized Multilayer Films and Porous Nanocomposites of Gold Nanoparticles with Octa(3-aminopropyl)octasilsesquioxane

2007 ◽  
Vol 17 (2) ◽  
pp. 447-457 ◽  
Author(s):  
Xiaqin Wang ◽  
Kensuke Naka ◽  
Meifang Zhu ◽  
Hidekatsu Kuroda ◽  
Hideaki Itoh ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Multilayer Films ◽  
Self Organized ◽  
Porous Nanocomposites

Self-Healing and Self-Organized Gold Nanoparticle Films at a Water/Organic Solvent Interface

2006 ◽  
Vol 6 (1) ◽  
pp. 130-134 ◽  
Author(s):  
Olivier Balmes ◽  
Jan-Olov Bovin ◽  
Jan-Olle Malm
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Gold Nanoparticles ◽  
Organic Solvent ◽  
Continuous Production ◽  
Self Healing ◽  
Self Organized ◽  
Transmission Electron ◽  
20 Nm

Gold nanoparticles (5 nm and 20 nm) have been synthesized and stabilized with mercaptoundecanol. These particles, although insoluble in water or common organic solvents, spread as a thin film at the liquid–liquid interface between a water phase and an organic phase. Films of these gold nanoparticles have been observed both by conventional transmission electron microscopy of deposited samples and by cryo-transmission electron microscopy of plunge-frozen samples. The film can be monolayered and extend over centimeter-sized areas. The particle films spontaneously re-assemble and self-organize at the interface when disrupted. This self-healing capacity of the film should make it possible to build a device for continuous production and deposition of the film.

scholarly journals Synthesis, Characterization and Bioactivity Profiling of Gold Nanoparticles of Trachyspermum Ammi Crude Extract

2021 ◽  
Author(s):  
Saud Bawazeer ◽  
Abdur Rauf ◽  
Humaira Naz ◽  
Syed Uzair Ali Shah ◽  
Dania Saad Waggas ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Gold Nanoparticles ◽  
Bacillus Subtilis ◽  
Crude Extract ◽  
Broad Band ◽  
Soluble Starch ◽  
Klebsiella Pneumonia ◽  
Trachyspermum Ammi ◽  
Uv Visible

Trachyspermum ammi seeds were selected for photochemical study. The crude T. ammi methanol and aqueous extracts showed the presence of alkaloids, saponins, steroids, terpenoids, coumarins, betacyanins, flavonoids and soluble starch. The synthesis of gold nanoparticles (AuNPs) using T. ammi extract was characterized using UV-visible, and FT-IR spectroscopy. The appearance of sharp peak at 520 nm in the UV visible spectra, and the appearance of broad band nanoparticles spectra at 563.21 cm-1, 516.92 cm-1 and 462.92 cm-1 as well as the disappearance of the carboxyl OH bond and carbon-carbon triple bond supported the formation of AuNPs. The crude T. ammi methanol and AuNPs were investigated for antioxidant potential using DPPH· free radical assay, which shows that crude extract has significant antioxidant effect. The synthesized AuNPs was also evaluated for antibacterial activities against staphylococcus aureus, Klebsiella pneumonia and Bacillus subtilis. The crude extract showed activity against Bacillus subtilis, while AuNPs showed activity against staphylococcus aureus. The in vivo sedative effect and analgesic effect were enhanced in AuNPs treated animals in 5 times less dose (i.e., 5, and 10 mg/kg) than that of crude extract. It was concluded that T. ammi extract include capping and reducing agents, which make it capable to be developed as stable AuNPs. The biological action of AuNPs is either enhanced (sedative and analgesic) or changed (antibacterial activity), when compared with that of plant extract.

scholarly journals Gold nanoparticles as nanosources of heat

Photoniques ◽  
2018 ◽  
pp. 42-47 ◽  
Author(s):  
Guillaume Baffou
Keyword(s):  
Gold Nanoparticles ◽  
Incident Light ◽  
Resonance Wavelength ◽  
Plasmonic Resonance

Under illumination at their plasmonic resonance wavelength, gold nanoparticles can absorb incident light and turn into efficient nanosources of heat remotely controllable by light. This fundamental scheme is at the basis of an active field of research coined thermoplasmonics and encompasses numerous applications in physics, chemistry and biology at the micro and nano scales.

Room temperature self-organized gold nanoparticles materials for embedded electronic devices

2012 ◽  
Vol 24 (1) ◽  
pp. 376-381 ◽  
Author(s):  
Chun-Chi Chen ◽  
Hsin-Chiang You ◽  
Edward Yi Chang ◽  
Fu-Hsiang Ko
Keyword(s):  
Gold Nanoparticles ◽  
Room Temperature ◽  
Electronic Devices ◽  
Self Organized

Dendronized Ferromagnetic Gold Nanoparticles Self-Organized in a Thermotropic Cubic Phase

2007 ◽  
Vol 19 (21) ◽  
pp. 3534-3539 ◽  
Author(s):  
B. Donnio ◽  
P. García-Vázquez ◽  
J.-L. Gallani ◽  
D. Guillon ◽  
E. Terazzi
Keyword(s):  
Gold Nanoparticles ◽  
Cubic Phase ◽  
Self Organized
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