High-yield synthesis of monodisperse gold nanorods with a tunable plasmon wavelength using 3-aminophenol as the reducing agent

Abstract

A method with exceptional comprehensive performance for gold nanorod synthesis using 3-aminophenol as the reducing agent.

Computational Optimization of the Size of Gold Nanorods for Single-Molecule Plasmonic Biosensors Operating in Scattering and Absorption Modes

“…As a result, the size parameters space (area) for which the CNR reaches values above 95% of the maximum (marked with dashed white lines in Figure ) coincides with an 8% size deviation in both width and length. Notably, this level of size monodispersity is currently achieved with wet chemistry synthesis of GNRs …”

“…The geometry is sketched in Figure . We simulate gold nanorods as spherically capped cylinders, which is a thermodynamically favored nanorod shape and can be synthesized with high monodispersity using current wet chemistry methods. , The nanorod is covered with a thin dielectric shell and placed on a semi-infinite glass substrate, and immersed in a semi-infinite water environment. We use experimental values of the complex refractive index of gold by Johnson and Christy and constant refractive indices for all other materials.…”

“…Their elongated shape also red-shifts the resonance away from the interband transition reducing plasmon damping and increasing the near-field enhancements . GNRs can be synthesized by wet chemistry methods providing high-quality single-crystal nanoparticles and good control over the size and shape monodispersity . Gold is the usual material of choice due to its chemical stability and better control of synthesis compared with silver, despite the latter being able to provide stronger plasmonic response .…”

Microporous‐Ceria‐Wrapped Gold Nanoparticles for Conductometric and SERS Dual Monitoring of Hazardous Gases at Room Temperature

“…Typical TEM images and corresponding EDS elemental mappings (insets) of some other metal@mp-oxide nanoarchitectures. The Ag NPs, Au nanorods, Ag nanowires, and Au nanobiconics were fabricated according to previous works, [45][46][47][48] and the Au nanostars were achieved by newly developed methods (will be reported elsewhere). All of these nanoarchitectures were sufficiently cleaned via centrifugations before wrapping.…”

Microfluidic Synthesis of Hybrid TiO2-Anisotropic Gold Nanoparticles with Visible and Near-Infrared Activity

“…Anisotropic gold-based nanoparticles play a crucial role in many fields thanks to their unique peculiarities and to the localized surface plasmon resonances that can be tuned to the near-infrared region (NIR). − Like isotropic AuNPs, anisotropic AuNPs are characterized by high biocompatibility and chemical stability; ,− however, due to their unique optical and electronic peculiarities, they are particularly appealing as innovative nanoagents in surface-enhanced Raman spectroscopy (SERS), , catalysis, ,− photonics, , and in biomedical and therapeutic applications. ,− In the last years, a great interest has been focused on the development of innovative hybrid nanoparticles, coupling anisotropic AuNPs to other components, providing nanomaterials characterized by exciting new properties. , In particular, the synthesis of nanostructures comprised of plasmonic nanoparticles and semiconductors (i.e., TiO 2 , titania) resulted in new powerful hybrid nanoparticles active both as biomedical tools , and as photocatalytic platforms. , The combination with noble-metal nanoparticles has shown a great ability to capitalize solar energy for chemical conversion, and such nanocomposites have been proposed as promising candidates to increase the photocatalytic activity of TiO 2 , extending in the near-infrared region its activity. ,− In nanobio applications, gold-titania nanocomposites have been recently exploited as a radiosensitizer in radiation therapy due to their interaction with X-rays able to amplify the radiation delivered during in vivo treatment . Gold clusters anchored onto black anatase TiO 2 nanotubes have shown a high photoresponsiveness up to NIR range (about 650 nm), suitable for photodynamic therapy (PDT) and have been employed in the treatment of cancer .…”