scholarly journals An Overview of the Synthesis of Gold Nanoparticles Using Radiation Technologies

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 939 ◽  
Author(s):  
Lucas Freitas de Freitas ◽  
Gustavo Varca ◽  
Jorge dos Santos Batista ◽  
Ademar Benévolo Lugão
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Gold Nanoparticle ◽  
Reducing Agents ◽  
Single Step ◽  
Nucleation Process ◽  
Size And Shape ◽  
Radiation Sources ◽  
Radiolytic Synthesis

At a nano-level, optical properties of gold are unique and gave birth to an emerging platform of nanogold-based systems for diverse applications, because gold nanoparticle properties are tunable as a function of size and shape. Within the available techniques for the synthesis of gold nanoparticles, the radiolytic synthesis allows proper control of the nucleation process without the need for reducing agents, in a single step, combined or not with simultaneous sterilization. This review details and summarizes the use of radiation technologies for the synthesis and preparation of gold nanoparticles concerning fundamental aspects, mechanism, current pathways for synthesis and radiation sources, as well as briefly outlines final applications and some toxicity aspects related to nanogold-based systems.

Photothermal Properties of Near-Spherical Gold Nanofluids With Strong Localized Surface Plasmon Resonance

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Wang Lingling ◽  
Zhu Guihua ◽  
Yu Wei ◽  
Zhu Dahai ◽  
Zhang Yingchun ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Great Influence ◽  
Reducing Agents ◽  
Localized Surface Plasmon ◽  
Photothermal Conversion

Near-spherical gold nanoparticles were synthesized using a facile chemical reduction method. The optical properties, size, and morphology of nanofluids were characterized using ultraviolet–visible–near-infrared (UV–Vis–NIR) spectroscopy and transmission electron microscope (TEM). All the gold nanofluids showed better photothermal conversion characteristics than H2O due to the strong localized surface plasmon resonance (LSPR) effect. The increase in gold nanoparticles diameters resulted in lower photothermal conversion properties, so the appropriate reducing agents have great influence on the optical properties of gold nanofluids in our experimental system. Trisodium citrate is the optimum reducing agents compared with NaBH4 and ascorbic acid (AA).

scholarly journals Surface-confined core–shell structures based on gold nanoparticles and metal–organic networks

2014 ◽  
Vol 50 (35) ◽  
pp. 4635-4638 ◽  
Author(s):  
Revital Kaminker ◽  
Michal Lahav ◽  
Marc Altman ◽  
Guennadi Evmenenko ◽  
Pulak Dutta ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Gold Nanoparticle ◽  
Shell Structures ◽  
Core Shell ◽  
Metal Organic ◽  
Organic Networks

A gold nanoparticle platform enhances the optical properties and order in a metal–organic network (MON).

In situ hydrosilane reduction and preparation of gold nanoparticle–gel glass composites with nonlinear optical properties

2018 ◽  
Vol 6 (21) ◽  
pp. 5624-5629 ◽  
Author(s):  
Dajiang Yu ◽  
Xingming Sun ◽  
Xin Chen ◽  
Wencan Ma ◽  
Jibin Sun ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Gold Nanoparticle ◽  
Nonlinear Optical ◽  
Optical Limiting ◽  
Nonlinear Optical Properties ◽  
Glass Composites

Gold nanoparticles were reduced in situ by a new hydrosilane reductant in organosilicon oligomer to fabricate nonlinear optical limiting materials.

scholarly journals Gold Nanoparticle Mediated Phototherapy for Cancer

2016 ◽  
Vol 2016 ◽  
pp. 1-29 ◽  
Author(s):  
Cuiping Yao ◽  
Luwei Zhang ◽  
Jing Wang ◽  
Yulu He ◽  
Jing Xin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Radiation Therapy ◽  
Photodynamic Therapy ◽  
Adverse Effects ◽  
Gold Nanoparticle ◽  
Photothermal Therapy ◽  
Drug Carrier ◽  
Cancer Treatments ◽  
Medical Diagnostic

Gold nanoparticles exhibit very unique physiochemical and optical properties, which now are extensively studied in range of medical diagnostic and therapeutic applications. In particular, gold nanoparticles show promise in the advancement of cancer treatments. This review will provide insights into the four different cancer treatments such as photothermal therapy, gold nanoparticle-aided photodynamic therapy, gold nanoparticle-aided radiation therapy, and their use as drug carrier. We also discuss the mechanism of every method and the adverse effects and its limitations.

scholarly journals Glyco-gold nanoparticles: synthesis and applications

2017 ◽  
Vol 13 ◽  
pp. 1008-1021 ◽  
Author(s):  
Federica Compostella ◽  
Olimpia Pitirollo ◽  
Alessandro Silvestri ◽  
Laura Polito
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Biological Activity ◽  
Gold Nanoparticle ◽  
Metallic Core ◽  
Single Entity ◽  
Recent Advances ◽  
Nanoparticles Synthesis ◽  
Nanoparticle Design

Glyco-gold nanoparticles combine in a single entity the peculiar properties of gold nanoparticles with the biological activity of carbohydrates. The result is an exciting nanosystem, able to mimic the natural multivalent presentation of saccharide moieties and to exploit the peculiar optical properties of the metallic core. In this review, we present recent advances on glyco-gold nanoparticle applications in different biological fields, highlighting the key parameters which inspire the glyco nanoparticle design.

scholarly journals Rational screening of biomineralisation peptides for colour-selected one-pot gold nanoparticle syntheses

2019 ◽  
Vol 1 (1) ◽  
pp. 71-75 ◽  
Author(s):  
M. Tanaka ◽  
Y. Takahashi ◽  
L. Roach ◽  
K. Critchley ◽  
S. D. Evans ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Gold Nanoparticle ◽  
Peptide Library ◽  
One Pot ◽  
Binding Peptide ◽  
One Pot Synthesis ◽  
Rational Screening ◽  
The One ◽  
Spotted Array

Biomineralisation peptides that facilitate the one-pot synthesis of gold nanoparticles (AuNPs) with selected optical properties, were screened using a coherent peptide-spotted array consisting of a AuNP binding peptide library.

Recent Advances of Plasmonic Gold Nanoparticles in Optical Sensing and Therapy

2020 ◽  
Vol 25 (46) ◽  
pp. 4861-4876 ◽  
Author(s):  
He Zhou ◽  
Hongwei Yang ◽  
Guangke Wang ◽  
Aijun Gao ◽  
Zhiqin Yuan
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Selective Detection ◽  
Future Trends ◽  
Therapeutic System ◽  
Special Surface

: Gold nanoparticles with special surface plasmon resonance have been widely used in sensing and therapy because of their easy preparation, unique optical properties, excellent biocompatibility, etc. The applications of gold nanoparticles in chemo/biosensing, imaging, and therapy reported in 2016-2019, are summarized in this review. Regarding the gold nanoparticle-based sensing or imaging, sensing mechanisms and strategies are provided to illustrate the concepts for designing sensitive and selective detection platforms. Gold nanoparticlemediated therapy is introduced by surface plasmon resonance-based therapy and delivery-based therapy. Beyond the sole therapeutic system, platforms through synergistic therapy are also discussed. In the end, discussion of the challenges and future trends of gold nanoparticle-based sensing and therapy systems is described.

Synthesis and optical properties of gold nanoparticle networks cross-linked with chain-length-controlled polymers

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34704-34708 ◽  
Author(s):  
Emi Sugata ◽  
Seiya Kobatake
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Gold Nanoparticle ◽  
Chain Length ◽  
Cross Linking ◽  
Sh Groups

We synthesized gold nanoparticle networks by a cross-linking of gold nanoparticles with chain-length-controlled polymers having SH groups at both termini.

Optical Properties of Gold Nanoparticles Produced by the Assembly of Size-Selected Clusters: Covering the Full Visible Wavelength Range in the Smallest Particle Size Regime

2007 ◽  
Vol 72 (1) ◽  
pp. 121-128 ◽  
Author(s):  
Stefan Vajda ◽  
Gary P. Wiederrecht ◽  
Alexandre Bouhelier ◽  
George Y. Tikhonov ◽  
Nancy Tomczyk ◽  
...  
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Optical Properties ◽  
Wavelength Range ◽  
Indium Tin Oxide ◽  
Dark Field ◽  
Oxide Glass ◽  
Size And Shape ◽  
Particle Size And Shape ◽  
Microscopy Techniques

The tunability of the optical properties of small gold nanoparticles assembled from size-selected Au6-10 clusters on the surface of indium-tin-oxide glass support was studied as a function of gold particle size and shape using UV-VIS and dark-field microscopy techniques. The size and shape of gold nanoparticles was determined by employing synchrotron X-ray scattering. The obtained spectra show that a 350 nm wavelength range is accessible by proper tuning the size and shape of the studied nanoparticles with 1-2.5 nm main size and asymmetric vs symmetric form.

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