Size-Dependent Phase Transfer Functionalization of Gold Nanoparticles To Promote Well-Ordered Self-Assembly

Langmuir ◽  
2017 ◽  
Vol 33 (50) ◽  
pp. 14437-14444 ◽  
Author(s):  
Florian Schulz ◽  
Steffen Tober ◽  
Holger Lange
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Phase Transfer ◽  
Size Dependent

Functionalization of Gold Nanoparticles with Monosaccharide Mannose

2021 ◽  
pp. 6281-6284
Author(s):  
Sambit Dash ◽  
Pragna Rao ◽  
Ullas Kamath ◽  
Aparna R Pai ◽  
Prasanna Kumar Reddy Gayam ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Phase Transfer ◽  
Colour Change ◽  
Cost Effective ◽  
Biomedical Sciences ◽  
Size Dependent ◽  
Nanoparticles Dispersion ◽  
Wide Range ◽  
Three Stages ◽  
Transfer Method

Gold nanoparticles have found a wide range of application in biomedical sciences. Unique properties of these metal nanoparticles include surface plasmon resonance and size dependent colour change. Various molecules have been functionalized on the gold nanoparticles surface but carbohydrates have garnered attention due to their properties and their role in living systems. However certain challenges make carbohydrate-gold nanoparticles association difficult to obtain and stabilize. This study was carried out to chemically remodel gold nanoparticles by adding a monosaccharide mannose to its surface. A modified phase transfer method was used to synthesize gold nanoparticles. The surface of the nanoparticles was fixed with cyanuric chloride to serve as a linker. Mannose was then linked to the linker molecule. All three stages of the process, gold nanoparticles, and gold nanoparticles with linker and gold nanoparticles with the carbohydrate were analyzed for size and stability. Zeta potential and UV-vis data exhibited stable gold nanoparticles dispersion, successful binding of linker molecule as well as the carbohydrate. This study shows a simple, cost-effective and robust method of glycomodification of gold nanoparticles surface which can further find use in wide ranging applications.

Phase-transfer and size-dependent film formation of gold nanoparticles

2009 ◽  
Vol 118 (1) ◽  
pp. 118-124 ◽  
Author(s):  
Shweta Hegde ◽  
Ridhima Chadha ◽  
Satyawati Joshi ◽  
Tulsi Mukherjee ◽  
Sudhir Kapoor
Keyword(s):  
Gold Nanoparticles ◽  
Phase Transfer ◽  
Film Formation ◽  
Size Dependent

Vertical segregation in the self-assembly of nanoparticles at the liquid/air interface

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 14662-14666 ◽  
Author(s):  
Yanming Liu ◽  
Yang Liu ◽  
Peng Tao ◽  
Wen Shang ◽  
Chengyi Song ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
The Self ◽  
Bimodal Size Distribution ◽  
Size Dependent ◽  
Colloidal Gold Nanoparticles ◽  
Air Interface ◽  
Vertical Segregation ◽  
One Step ◽  
The One

Vertical segregation was induced by the size-dependent charge neutralization during the one-step interfacial self-assembly of colloidal gold nanoparticles with bimodal size distribution.

scholarly journals Synthesis and Self-assembly of DMPC-conjugated Gold Nanoparticles

2007 ◽  
Vol 1061 ◽  
Author(s):  
Subhasish Chatterjee ◽  
Markrete Krikorian ◽  
Harry D. Gafney ◽  
Bonnie Gersten
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Phase Transfer ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Compression Isotherm ◽  
Self Assembled Monolayer ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Transfer Method

ABSTRACTBio-conjugated nanomaterials play a promising role in the development of novelsupramolecular structures, molecular machines, and biosensing devices. In this study, lipid-capped gold nanoparticles were synthesized and allowed to form a self-assembled monolayer structure. The nanoparticles were prepared by a phase transfer method, which involved the reduction of potassium tetrachloroaurate(III) by sodium citrate in an aqueous solution and the simultaneous transfer of the reduced species to an organic medium containing DMPC (1,2-dimyristoyl-sn-glycero-3-phosphocholine). The gold nanoparticles were characterized using Uv-vis spectroscopy and dynamic light scattering (DLS) particle-size analysis. In addition, the resulting nanoparticles were examined using transmission electron microscopy (TEM). The Langmuir-Blodgett (LB) technique was used to assemble the DMPC-capped nanoparticles onto a water subphase at room temperature. The measurement of the compression isotherm confirmed the assemblage of lipid capped gold nanoparticles. This method of synthesis of ordered structures utilizing molecular interactions of lipids will be useful in developing novel metamaterials and nanocircuits.

Controlling the self-assembly and optical properties of gold nanoclusters and gold nanoparticles biomineralized with bovine serum albumin

RSC Advances ◽  
2015 ◽  
Vol 5 (122) ◽  
pp. 101101-101109 ◽  
Author(s):  
Birgitte H. McDonagh ◽  
Gurvinder Singh ◽  
Sulalit Bandyopadhyay ◽  
Sina M. Lystvet ◽  
Joseph A. Ryan ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Bovine Serum Albumin ◽  
Growth Mechanism ◽  
Self Assembly ◽  
Gold Nanoclusters ◽  
The Self ◽  
Time Dependent ◽  
Size Dependent ◽  
Dependent Growth

While the size-dependent optical properties of BSA-stabilized gold nanoclusters are well known, the time-dependent growth mechanism remains to be described.

Self-Organization of Gold Nanoparticles on Surface-Modified Conducting Polymer Films

2003 ◽  
Vol 775 ◽  
Author(s):  
Donghui Zhang ◽  
Sarah Klapman ◽  
Timothy W. Hanks
Keyword(s):  
Gold Nanoparticles ◽  
Self Assembly ◽  
Particle Distribution ◽  
Phase Transfer ◽  
Polymer Surface ◽  
Self Organization ◽  
Polymer Substrates ◽  
Unique Method ◽  
Surface Modified ◽  
Conducting Polymer Films

AbstractThiol-coated gold nanoparticles with a diameter of approximately 7.5 nanometers and a narrow particle distribution were prepared from sodium tetrachloroaurate under phase transfer conditions. The thiols used were 1-mercaptododecane (1) and 1-mercapto-9,11-heptadecadiyne (4). The particles were cast onto thin films of polyaniline and poly (3,4-ethylenedioxythiophene), as well as onto thiol-coated versions of the same polymer. Surface modification of the polymers with long chain thiols encourages the spontaneous self-assembly of the particles into twodimensional arrays and may offer a unique method for stabilization of nanoparticle assemblies on polymer substrates.

scholarly journals Self-assembly and redox induced phase transfer of gold nanoparticles at a water–propylene carbonate interface

2017 ◽  
Vol 53 (29) ◽  
pp. 4108-4111 ◽  
Author(s):  
Evgeny Smirnov ◽  
Pekka Peljo ◽  
Hubert H. Girault
Keyword(s):  
Gold Nanoparticles ◽  
Interfacial Tension ◽  
Propylene Carbonate ◽  
Organic Phase ◽  
Electron Donor ◽  
Self Assembly ◽  
Phase Transfer ◽  
Low Interfacial Tension

Citrate-stabilized gold nanoparticles were found to spontaneously self-assemble into a lustrous film at a bare water–propylene carbonate interface after vigorous shaking, due to the extremely low interfacial tension. The presence of the electron donor, tetrathiafulvalene, in the oil phase, led to the extraction of particles into the organic phase.

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