Seed-Mediated Synthesis of Gold Nanocrystals with Systematic Shape Evolution from Cubic to Trisoctahedral and Rhombic Dodecahedral Structures

Langmuir ◽  
2010 ◽  
Vol 26 (14) ◽  
pp. 12307-12313 ◽  
Author(s):  
Hsin-Lun Wu ◽  
Chun-Hong Kuo ◽  
Michael H. Huang
Keyword(s):  
Shape Evolution ◽  
Gold Nanocrystals ◽  
Seed Mediated

scholarly journals Covalently capped seed-mediated growth: a unique approach toward hierarchical growth of gold nanocrystals

Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 6478-6481 ◽  
Author(s):  
Youju Huang ◽  
Anirban Dandapat ◽  
Dong-Hwan Kim
Keyword(s):  
Gold Nanostructures ◽  
Gold Nanocrystals ◽  
Unique Approach ◽  
Different Shapes ◽  
Seed Mediated ◽  
Growth Approach

A new 600 dpi in TIF format)??>method is proposed for synthesizing hierarchical gold nanostructures in different shapes using the covalently capped seed-mediated growth approach.

Size and shape evolution of highly magnetic iron nanoparticles from successive growth reactions

2017 ◽  
Vol 53 (84) ◽  
pp. 11548-11551 ◽  
Author(s):  
A. J. McGrath ◽  
S. Cheong ◽  
A. M. Henning ◽  
J. J. Gooding ◽  
R. D. Tilley
Keyword(s):  
Iron Nanoparticles ◽  
Surface Oxidation ◽  
Shape Evolution ◽  
Size And Shape ◽  
Seed Mediated

Monodisperse iron nanoparticles are synthesized via successive seed-mediated growth reactions. By performing additional growth reactions, the nanoparticles’ magnetic character post-surface oxidation is tuned from superparamagnetic to ferromagnetic.

Overpotential-dependent shape evolution of gold nanocrystals grown in a deep eutectic solvent

Nano Research ◽  
2016 ◽  
Vol 9 (11) ◽  
pp. 3547-3557 ◽  
Author(s):  
Lu Wei ◽  
Bangan Lu ◽  
Mingjun Sun ◽  
Na Tian ◽  
Zhiyou Zhou ◽  
...  
Keyword(s):  
Deep Eutectic Solvent ◽  
Shape Evolution ◽  
Gold Nanocrystals

Seed-Mediated Synthesis of Monodisperse Concave Trisoctahedral Gold Nanocrystals with Controllable Sizes

2010 ◽  
Vol 114 (25) ◽  
pp. 11119-11126 ◽  
Author(s):  
Yue Yu ◽  
Qingbo Zhang ◽  
Xianmao Lu ◽  
Jim Yang Lee
Keyword(s):  
Gold Nanocrystals ◽  
Seed Mediated

scholarly journals Seed-Mediated Growth of Gold Nanocrystals: Changes to the Crystallinity or Morphology as Induced by the Treatment of Seeds with a Sulfur Species

2014 ◽  
Vol 118 (49) ◽  
pp. 14132-14139 ◽  
Author(s):  
Yiqun Zheng ◽  
Ming Luo ◽  
Jing Tao ◽  
Hsin-Chieh Peng ◽  
Dehui Wan ◽  
...  
Keyword(s):  
Sulfur Species ◽  
Gold Nanocrystals ◽  
Seed Mediated

Systematic Shape Evolution of Gold Nanocrystals Achieved through Adjustment in the Amount of HAuCl4 Solution Used

2018 ◽  
Vol 122 (43) ◽  
pp. 25118-25126 ◽  
Author(s):  
Bing-Hong Kuo ◽  
Chi-Fu Hsia ◽  
Tzu-Ning Chen ◽  
Michael H. Huang
Keyword(s):  
Shape Evolution ◽  
Gold Nanocrystals

Seed-mediated synthesis and PEG coating of gold nanoparticles for controlling morphology and sizes

MRS Advances ◽  
2020 ◽  
Vol 5 (63) ◽  
pp. 3353-3360
Author(s):  
Susana Helena Arellano Ramírez ◽  
Perla García Casillas ◽  
Christian Chapa González
Keyword(s):  
Gold Nanoparticles ◽  
Polyethylene Glycol ◽  
Room Temperature ◽  
Colloidal Stability ◽  
Infrared Spectrometry ◽  
Ammonium Bromide ◽  
Chloroauric Acid ◽  
Vis Spectroscopy ◽  
Seed Mediated ◽  
Peg Coating

AbstractA significant area of research is biomedical applications of nanoparticles which involves efforts to control the physicochemical properties through simple and scalable processes. Gold nanoparticles have received considerable attention due to their unique properties that they exhibit based on their morphology. Gold nanospheres (AuNSs) and nanorods (AuNRs) were prepared with a seed-mediated method followed of polyethylene glycol (PEG)-coating. The seeds were prepared with 0.1 M cetyltrimethyl-ammonium bromide (CTAB), 0.005 M chloroauric acid (HAuCl4), and 0.01 M sodium borohydride (NaBH4) solution. Gold nanoparticles with spherical morphology was achieved by growth by aggregation at room temperature, while to achieve the rod morphology 0.1 M silver nitrate (AgNO3) and 0.1 M ascorbic acid solution were added. The gold nanoparticles obtained by the seed-mediated synthesis have spherical or rod shapes, depending on the experimental conditions, and a uniform particle size. Surface functionalization was developed using polyethylene glycol. Morphology, and size distribution of AuNPs were evaluated by Field Emission Scanning Electron Microscopy. The average size of AuNSs, and AuNRs was 7.85nm and 7.96 x 31.47nm respectively. Fourier transform infrared spectrometry was performed to corroborate the presence of PEG in the AuNPs surface. Additionally, suspensions of AuNSs and AuNRs were evaluated by UV-Vis spectroscopy. Gold nanoparticles were stored for several days at room temperature and it was observed that the colloidal stability increased once gold nanoparticles were coated with PEG due to the shield formed in the surface of the NPs and the increase in size which were 9.65±1.90 nm of diameter for AuNSs and for AuNRs were 29.03±5.88 and 8.39±1.02 nm for length and transverse axis, respectively.

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