scholarly journals Effect of Particle Diameter and Surface Composition on the Spontaneous Fusion of Monolayer-Protected Gold Nanoparticles with Lipid Bilayers

Nano Letters ◽  
2013 ◽  
Vol 13 (9) ◽  
pp. 4060-4067 ◽  
Author(s):  
Reid C. Van Lehn ◽  
Prabhani U. Atukorale ◽  
Randy P. Carney ◽  
Yu-Sang Yang ◽  
Francesco Stellacci ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Lipid Bilayers ◽  
Surface Composition ◽  
Particle Diameter

Aromaticity/Bulkiness of Surface Ligands to Promote the Interaction of Anionic Amphiphilic Gold Nanoparticles with Lipid Bilayers

Langmuir ◽  
2016 ◽  
Vol 32 (6) ◽  
pp. 1601-1610 ◽  
Author(s):  
Jinhong Gao ◽  
Ouyang Zhang ◽  
Jing Ren ◽  
Chuanliu Wu ◽  
Yibing Zhao
Keyword(s):  
Gold Nanoparticles ◽  
Lipid Bilayers ◽  
Surface Ligands

scholarly journals Size matters: Size Dependency of Gold Nanoparticles Interacting with Model Membranes

2019 ◽  
Author(s):  
Claudia Contini ◽  
James W. Hindley ◽  
Tom Macdonald ◽  
Joseph Barritt ◽  
Oscar Ces ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Lipid Bilayers ◽  
Lipid Membrane ◽  
Rapid Development ◽  
Membrane System ◽  
Size Dependent ◽  
Research Fields ◽  
Large Unilamellar Vesicles ◽  
Wide Range ◽  
Experimental Characterisation

<p><b>The rapid development of nanomaterials has led to an increase in the number and variety of engineered nanomaterials (ENMs) in the environment. Gold nanoparticles (AuNPs) are an example of a commonly studied ENM whose highly tailorable properties have generated significant interest through a wide range of research fields. In the present work, we report the first qualitative as well as quantitative experimental characterisation of the AuNP-membrane interaction. We investigate the interactions between citrate-stabilised AuNPs (diameters 5, 10, 25, 35, 50, 60 nm) and large unilamellar vesicles (LUVs) acting as a model membrane system. LUVs were prepared in two different formulations using 1-palmitoyl-2-oleoyl-glycero-3-phosphocholine (POPC) and 1,2-dileoyl-sn-glycero-3-phosphocholine (DOPC). Our results show that the interaction between AuNPs and LUVs is size dependent; in particular, we reveal the existence of two AuNP’s critical diameters which determine the fate of AuNPs in contact with a lipid membrane. The results provide a new understanding of the size dependent interaction between AuNPs and lipid bilayers of direct relevance to nanotoxicology and to the design of NP vectors.</b></p>

Deciphering the Surface Composition and the Internal Structure of Alloyed Silver-Gold Nanoparticles

2018 ◽  
Vol 24 (36) ◽  
pp. 9051-9060 ◽  
Author(s):  
Viktoria Grasmik ◽  
Christian Rurainsky ◽  
Kateryna Loza ◽  
Mathies V. Evers ◽  
Oleg Prymak ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Internal Structure ◽  
Surface Composition

scholarly journals Impact of the Particle Diameter on Ion Cloud Formation from Gold Nanoparticles in ICPMS

2018 ◽  
Vol 90 (17) ◽  
pp. 10271-10278 ◽  
Author(s):  
Joshua Fuchs ◽  
Maryam Aghaei ◽  
Tilo D. Schachel ◽  
Michael Sperling ◽  
Annemie Bogaerts ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Particle Diameter ◽  
Cloud Formation ◽  
Ion Cloud

scholarly journals Controlled Synthesis of Gold Nanoparticles UsingAspergillus terreusIF0 and Its Antibacterial Potential against Gram Negative Pathogenic Bacteria

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Eepsita Priyadarshini ◽  
Nilotpala Pradhan ◽  
Lala B. Sukla ◽  
Prasanna K. Panda
Keyword(s):  
Gold Nanoparticles ◽  
Pathogenic Bacteria ◽  
Particle Diameter ◽  
Weight Fraction ◽  
Xrd Analysis ◽  
Controlled Synthesis ◽  
Chloroauric Acid ◽  
Gram Negative ◽  
Fungal Extract ◽  
Vis Spectroscopy

Biosynthesis of monodispersed nanoparticles, along with determination of potential responsible biomolecules, is the major bottleneck in the area of bionanotechnology research. The present study focuses on an ecofriendly, ambient temperature protocol for size controlled synthesis of gold nanoparticles, using the fungusAspergillus terreusIF0. Gold nanoparticles were formed immediately, with the addition of chloroauric acid to the aqueous fungal extract. Synthesized nanoparticles were characterized by UV-Vis spectroscopy, TEM-EDX, and XRD analysis. Particle diameter and dispersity of nanoparticles were controlled by varying the pH of the fungal extract. At pH 10, the average size of the synthesized particles was in the range of 10–19 nm. Dialysis to obtain high and low molecular weight fraction followed by FTIR analysis revealed that biomolecules larger than 12 kDa and having –CH, –NH, and –SH functional groups were responsible for bioreduction and stabilization. In addition, the synthesized gold nanoparticles were found to be selectively bactericidal against the pathogenic gram negative bacteria,Escherichia coli.

Effect of Functionalized Gold Nanoparticles on Floating Lipid Bilayers

Langmuir ◽  
2013 ◽  
Vol 29 (22) ◽  
pp. 6606-6614 ◽  
Author(s):  
Sabina Tatur ◽  
Marco Maccarini ◽  
Robert Barker ◽  
Andrew Nelson ◽  
Giovanna Fragneto
Keyword(s):  
Gold Nanoparticles ◽  
Lipid Bilayers ◽  
Functionalized Gold Nanoparticles

scholarly journals Formation of supported lipid bilayers containing phase-segregated domains and their interaction with gold nanoparticles

2016 ◽  
Vol 3 (1) ◽  
pp. 45-55 ◽  
Author(s):  
Eric S. Melby ◽  
Arielle C. Mensch ◽  
Samuel E. Lohse ◽  
Dehong Hu ◽  
Galya Orr ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Lipid Bilayers ◽  
Supported Lipid Bilayers ◽  
Silica Substrates

Here we describe a method to form phase-segregated domain-containing supported lipid bilayers on silica substrates and demonstrate that the presence of these domains can alter nanoparticle interaction with bilayers.

A Thermogravimetric Study of Alakanethiolate Monolayer-Capped Gold Nanoparticle Catalysts

2003 ◽  
Vol 789 ◽  
Author(s):  
Mathew M. Maye ◽  
Sandy Chen ◽  
Wai-Ben Chan ◽  
Lingyan Wang ◽  
Peter Njoki ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Composition ◽  
Model System ◽  
Core Shell ◽  
Oxidation Of Co ◽  
Nanoparticle Catalysts ◽  
The Core ◽  
Catalytic Application ◽  
Treatment Conditions ◽  
Shell Composition

ABSTRACTThe application of molecularly-capped gold nanoparticles (1–5 nm) in catalysis (e.g., electrocatalytic oxidation of CO and methanol) requires a thorough understanding of the surface composition and structural properties. Gold nanoparticles consisting of metallic or alloy cores and organic encapsulating shells serve as an intriguing model system. One of the challenges for the catalytic application is the ability to manipulate the core and the shell properties in controllable ways. There is a need to understand the relative core-shell composition and the ability to remove the shell component under thermal treatment conditions. In this paper, we report results of a thermogravimetric analysis of the alkanethiolate monolayer-capped gold nanoparticles. This investigation is aimed at enhancing our understanding of the relative core-shell composition and thermal profiles.

Distribution of Functionalized Gold Nanoparticles between Water and Lipid Bilayers as Model Cell Membranes

2012 ◽  
Vol 46 (3) ◽  
pp. 1869-1876 ◽  
Author(s):  
Wen-Che Hou ◽  
Babak Yaghoubi Moghadam ◽  
Charlie Corredor ◽  
Paul Westerhoff ◽  
Jonathan D. Posner
Keyword(s):  
Gold Nanoparticles ◽  
Lipid Bilayers ◽  
Cell Membranes ◽  
Functionalized Gold Nanoparticles ◽  
Model Cell
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