Rapid Seeded Growth of Monodisperse, Quasi-Spherical, Citrate-Stabilized Gold Nanoparticles via H2O2 Reduction

Langmuir ◽  
2012 ◽  
Vol 28 (38) ◽  
pp. 13720-13726 ◽  
Author(s):  
Xiaokong Liu ◽  
Haolan Xu ◽  
Haibing Xia ◽  
Dayang Wang
Keyword(s):  
Gold Nanoparticles ◽  
Seeded Growth ◽  
H2o2 Reduction

X-ray computed tomography contrast agents prepared by seeded growth of gold nanoparticles in PEGylated dendrimer

2010 ◽  
Vol 21 (24) ◽  
pp. 245104 ◽  
Author(s):  
Chie Kojima ◽  
Yasuhito Umeda ◽  
Mikako Ogawa ◽  
Atsushi Harada ◽  
Yasuhiro Magata ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Gold Nanoparticles ◽  
Contrast Agents ◽  
Seeded Growth ◽  
X Ray ◽  
X Ray Computed

Synthesis of large gold nanoparticles with deformation twinnings by one-step seeded growth with Cu(ii)-mediated Ostwald ripening for determining nitrile and isonitrile groups

Nanoscale ◽  
2020 ◽  
Vol 12 (32) ◽  
pp. 16934-16943
Author(s):  
Chenshuo Wu ◽  
Hongpeng He ◽  
Yahui Song ◽  
Cuixia Bi ◽  
Lixiang Xing ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ostwald Ripening ◽  
Seeded Growth ◽  
Growth Method ◽  
One Step

Gold nanoparticles with deformation twinnings prepared by a Cu2+-assisted one-step seeded growth method can distinguish nitrile and isonitrile groups by SERS.

Tailored multifunctional micellar brushes via crystallization-driven growth from a surface

Science ◽  
2019 ◽  
Vol 366 (6469) ◽  
pp. 1095-1098 ◽  
Author(s):  
Jiandong Cai ◽  
Chen Li ◽  
Na Kong ◽  
Yi Lu ◽  
Geyu Lin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Surface Functionalization ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Seeded Growth ◽  
Material Surfaces ◽  
Oil In Water ◽  
Two Dimensional Materials ◽  
Antibacterial Surface

The creation of nanostructures with precise chemistries on material surfaces is of importance in a wide variety of areas such as lithography, superhydrophobicity, and cell adhesion. We describe a platform for surface functionalization that involves the fabrication of cylindrical micellar brushes on a silicon wafer through seeded growth of crystallizable block copolymers at the termini of immobilized, surface-confined crystallite seeds. The density, length, and coronal chemistry of the micellar brushes can be precisely tuned, and post-growth decoration with nanoparticles enables applications in catalysis and antibacterial surface modification. The micellar brushes can also be grown on ultrathin two-dimensional materials such as graphene oxide nanosheets and further assembled into a membrane for the separation of oil-in-water emulsions and gold nanoparticles.

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.

Implications of citrate concentration during the seeded growth synthesis of gold nanoparticles

2011 ◽  
Vol 47 (1) ◽  
pp. 478-480 ◽  
Author(s):  
Anna A. Volkert ◽  
Varuni Subramaniam ◽  
Amanda J. Haes
Keyword(s):  
Gold Nanoparticles ◽  
Seeded Growth ◽  
Citrate Concentration

scholarly journals Self-propulsion of catalytic nanomotors synthesised by seeded growth of asymmetric platinum–gold nanoparticles

2018 ◽  
Vol 54 (15) ◽  
pp. 1901-1904 ◽  
Author(s):  
Ibon Santiago ◽  
Luyun Jiang ◽  
John Foord ◽  
Andrew J. Turberfield
Keyword(s):  
Gold Nanoparticles ◽  
High Throughput ◽  
Seeded Growth ◽  
Top Down ◽  
Catalytic Nanoparticles

Asymmetric bimetallic nanomotors are synthesised by seeded growth in solution, providing a convenient and high-throughput alternative to the usual top-down lithographic fabrication of self-propelled catalytic nanoparticles.

Study on Controlled Size, Shape and Dispersity of Gold Nanoparticles (AuNPs) Synthesized via Seeded-Growth Technique for Immunoassay Labeling

2011 ◽  
Vol 364 ◽  
pp. 504-509 ◽  
Author(s):  
Rabizah Makhsin Siti ◽  
Abdul Razak Khairunisak ◽  
Azlan Abdul Aziz ◽  
Rahmah Noordin
Keyword(s):  
Gold Nanoparticles ◽  
Size Range ◽  
Trisodium Citrate ◽  
Test Strip ◽  
Seeded Growth ◽  
Growth Technique ◽  
Seed Solution ◽  
Transmission Electron ◽  
Spherical Gold Nanoparticles ◽  
Solution Volume

This study describes the formation of spherical gold nanoparticles (AuNPs) using a simple seeded-growth technique. The size and surface morphology of AuNPs were investigated using transmission electron microscopy (TEM) and UV-Vis spectrophotometer was used to determine the wavelength and absorption of AuNPs. In the seed stage, the effect of trisodium citrate volume was studied. The size of AuNPs at seed stage was varied from 15 to 40 nm with decreasing volume of trisodium citrate. In the growth stage, the effects of seed solution volume and concentration of hydroxylamine were studied. The size of AuNPs produced became larger when the amount of seed solution was reduced. This approach was beneficial to produce AuNPs with the size range from 15 to 150 nm. The increase of hydroxylamine concentration increased the size of AuNPs. However, after the concentration of hydroxylamine reached supersaturation condition (3 M NH2OH.HCl), the AuNPs formed in a bulk and clusters. Selected sizes of AuNPs were then conjugated to antibody and proved by testing on the immunoassay test strip. The observation using naked eyes for the appearance of red lines on the immunoassay test strip showed that AuNPs were successfully conjugated to antibody and specifically bound to the antigen drawn on the strip assay by tested with positive and negative serum of the disease.

Seeded Growth Synthesis of Uniform Gold Nanoparticles with Diameters of 15−300 nm

2011 ◽  
Vol 115 (11) ◽  
pp. 4502-4506 ◽  
Author(s):  
Christoph Ziegler ◽  
Alexander Eychmüller
Keyword(s):  
Gold Nanoparticles ◽  
Seeded Growth

scholarly journals Innovative gold nanoparticle patterning and selective metallization

2013 ◽  
Vol 1547 ◽  
pp. 149-154
Author(s):  
E.S. Kooij ◽  
M.A. Raza ◽  
H.J.W. Zandvliet
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Pure Water ◽  
Water Molecules ◽  
Thiol Groups ◽  
Seeded Growth ◽  
Self Assembled Layer ◽  
High Degree ◽  
Metal Layers

ABSTRACTWe present a simple, novel procedure to selectively deposit gold nanoparticles using pure water. It enables patterning of nanoparticle monolayers with a remarkably high degree of selectivity on flat as well as microstructured oxide surfaces. We demonstrate that water molecules form a thin ‘capping’ layer on exposed thiol molecules within the mercaptan self-assembled layer. This reversible capping of water molecules locally ‘deactivates’ the thiol groups, therewith inhibiting the binding of metallic gold nanoparticles to these specific areas. In addition, we show that this amazing role of water molecules can be used to selectively metalize the patterned gold nanoparticle arrays. Employing an electroless seeded growth process, the isolated seeds are enlarged past the percolation threshold to deposit conducting metal layers.

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