Wavelength-tunable luminescent gold nanoparticles generated by cooperation ligand exchange and their potential application in cellular imaging

RSC Advances ◽  
2013 ◽  
Vol 3 (1) ◽  
pp. 59-63 ◽  
Author(s):  
Zhengyong Zhang ◽  
Lingjia Xu ◽  
Huixiang Li ◽  
Jilie Kong
Keyword(s):  
Gold Nanoparticles ◽  
Ligand Exchange ◽  
Potential Application ◽  
Cellular Imaging ◽  
Wavelength Tunable

scholarly journals Potential application of gold nanoparticles in food packaging: a mini review

Gold Bulletin ◽  
2021 ◽  
Author(s):  
Saeed Paidari ◽  
Salam Adnan Ibrahim
Keyword(s):  
Gold Nanoparticles ◽  
Potential Application ◽  
Food Industry ◽  
Food Packaging ◽  
Industrial Applications ◽  
Mechanisms Of Action ◽  
Microbial Load ◽  
Food Sector ◽  
The Past ◽  
Industry Applications

AbstractIn the past few decades, there have been remarkable advances in our knowledge of gold nanoparticles (AuNPs) and synthesizing methods. AuNPs have become increasingly important in biomedical and industrial applications. As a newly implemented method, AuNPs are being used in nanopackaging industries for their therapeutic and antibacterial characteristics as well as their inert and nontoxic nature. As with other NPs, AuNPs have privileges and disadvantages when utilized in the food sector, yet a significant body of research has shown that, due to the specific nontoxic characteristics, AuNPs could be used to address other NP flaws. In this mini review, we present synthesizing methods, food industry applications, and mechanisms of action of gold nanoparticles. Regarding the investigations, gold nanoparticles can play a major role to reduce microbial load in foodstuff and therefore can be implemented in food packaging as an effective approach.

A highly efficient ligand exchange reaction on gold nanoparticles: preserving their size, shape and colloidal stability

RSC Advances ◽  
2014 ◽  
Vol 4 (64) ◽  
pp. 34217-34220 ◽  
Author(s):  
Melissa R. Dewi ◽  
Geoffry Laufersky ◽  
Thomas Nann
Keyword(s):  
Gold Nanoparticles ◽  
Solvent Extraction ◽  
Exchange Reaction ◽  
Ligand Exchange ◽  
Colloidal Stability ◽  
Ligand Exchange Reaction ◽  
Highly Efficient

Almost complete ligand exchange and excellent colloidal stability of gold nanoparticles can be achieved by a new solvent extraction based method.

Localized Surface Plasmon Resonance Effect of Gold Nanoparticles Using 3-Mercaptopropionic Acid as Capping Material for Sensing Probe

2021 ◽  
Vol 891 ◽  
pp. 43-48
Author(s):  
Muhammad Tegar Pambudi ◽  
Suhandoko Dwi Isro ◽  
Priastuti Wulandari
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Ligand Exchange ◽  
Localized Surface Plasmon Resonance ◽  
Reduction Method ◽  
Colloidal Solution ◽  
Localized Surface Plasmon ◽  
Exchange Method ◽  
Vibrational Peak ◽  
Absorbance Spectra

Gold nanoparticles (AuNP) has been used in a wide range of applications especially in medicine and optoelectronic applications due to its localized surface plasmon resonance (LSPR) effect. LSPR observation of AuNP solution shows that the plasmonic peak in the absorbance spectra lies in the range of visible light around 520 nm with deep red-wine color. The optical characteristic is controlled by the size and shape of the nanoparticles including its surface functionalization. Our research is focused on the adsorption study of 3-mercaptopropionate (3-MP) on AuNP (AuMP) surface synthesized by ligand exchange method and also by direct reduction method. The characterizations are conducted by use of UV-vis and FTIR spectroscopies in order to investigate the effect of LSPR. The absorbance spectra show that both experimental methods of AuMP give a similar profile of red-shifted in the plasmonic peaks in comparison to that of citrate-capped AuNP as a reference from 519 nm to 520 nm. The ligand exchange method of AuMP synthesis results in an unstable colloidal solution after being stored for a week at room temperature while the reduction method results in a stable colloidal solution of AuMP even though it has been stored for 2 months. The FTIR spectra show the difference in vibrational peak intensities between the 3-MP on AuNP and the 3-MPA as reference. The peak of carboxylate (COO-) asymmetric stretching is shifted to low frequency from 1708 cm-1 to 1632 cm-1 indicate the effect of LSPR while the shift to high frequencies for some vibrational peak intensities relates to the strong effect of chemical coordination between gold and capping material. The simulation of the vibration energy by use of the Density Functional Theory (DFT) method shows a similar tendency to that of the peak intensities along the infrared spectrum from experimental results.

Nanogold-based materials in medicine: from their origins to their future

Nanomedicine ◽  
2021 ◽  
Author(s):  
Tânia Ferreira-Gonçalves ◽  
David Ferreira ◽  
Hugo A Ferreira ◽  
Catarina P Reis
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Potential Application ◽  
Biomedical Applications ◽  
Production Method ◽  
Therapeutic Approaches ◽  
Production Methods ◽  
Research Fields

The properties of gold-based materials have been explored for centuries in several research fields, including medicine. Multiple published production methods for gold nanoparticles (AuNPs) have shown that the physicochemical and optical properties of AuNPs depend on the production method used. These different AuNP properties have allowed exploration of their usefulness in countless distinct biomedical applications over the last few years. Here we present an extensive overview of the most commonly used AuNP production methods, the resulting distinct properties of the AuNPs and the potential application of these AuNPs in diagnostic and therapeutic approaches in biomedicine.

Advances and potential application of gold nanoparticles in nanomedicine

2019 ◽  
Vol 120 (10) ◽  
pp. 16370-16378 ◽  
Author(s):  
Talíria Silva Lopes ◽  
Gutemberg Gomes Alves ◽  
Mariana Rodrigues Pereira ◽  
Jose Mauro Granjeiro ◽  
Paulo Emílio Corrêa Leite
Keyword(s):  
Gold Nanoparticles ◽  
Potential Application

Synthesis of amphiphilic Janus gold nanoparticles stabilized with triphenylphosphine and D-penicillamine by ligand exchange at toluene/water emulsion interface

Gold Bulletin ◽  
2020 ◽  
Vol 53 (2) ◽  
pp. 55-62
Author(s):  
Degui Li ◽  
Yujia Luo ◽  
Jiaxin Lan ◽  
Zhihong Luo ◽  
Fujie Li ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ligand Exchange ◽  
Water Emulsion

scholarly journals Size-controlled and water-soluble gold nanoparticles using UV-induced ligand exchange and phase transfer

2018 ◽  
Vol 54 (95) ◽  
pp. 13355-13358 ◽  
Author(s):  
Jan Bart ten Hove ◽  
Laura M. I. Schijven ◽  
Junyou Wang ◽  
Aldrik H. Velders
Keyword(s):  
Gold Nanoparticles ◽  
Ligand Exchange ◽  
Water Solubility ◽  
Phase Transfer ◽  
Water Soluble ◽  
Size Distributions ◽  
Seeded Growth ◽  
Growth Approach ◽  
Size Controlled

Oleylamine-capped gold nanoparticles (AuNPs) with sizes ranging from 5 to 13 nm and narrow size distributions (<10%) are synthesized by using a seeded growth approach. Water-solubility is achieved by using a UV-induced ligand exchange approach.

scholarly journals Ru(ii)-polypyridyl surface functionalised gold nanoparticles as DNA targeting supramolecular structures and luminescent cellular imaging agents

Nanoscale ◽  
2016 ◽  
Vol 8 (1) ◽  
pp. 563-574 ◽  
Author(s):  
Miguel Martínez-Calvo ◽  
Kim N. Orange ◽  
Robert B. P. Elmes ◽  
Bjørn la Cour Poulsen ◽  
D. Clive Williams ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Cellular Imaging ◽  
Supramolecular Structures ◽  
Imaging Agents ◽  
Dna Targeting ◽  
Functionalized Gold Nanoparticles ◽  
Average Size

The development of 15 nm (average size) Ru(ii) functionalized gold nanoparticles 1–3·AuNP is described.

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