One-step seeded growth of monodisperse, quasi-spherical, Tris-stabilized gold nanocrystals with sizes from 17 to 325 nm

CrystEngComm ◽  
2017 ◽  
Vol 19 (2) ◽  
pp. 318-324 ◽  
Author(s):  
Yijing Li ◽  
Peina Zhang ◽  
Junling Duan ◽  
Shiyun Ai ◽  
Houshen Li
Keyword(s):  
Seeded Growth ◽  
Gold Nanocrystals ◽  
One Step

Enriching the branching of Au@PdAu core–shell nanocrystals using a syringe pump: kinetics control meets lattice mismatch

CrystEngComm ◽  
2021 ◽  
Vol 23 (13) ◽  
pp. 2582-2589
Author(s):  
Gongguo Zhang ◽  
Yanyun Ma ◽  
Xiaowei Fu ◽  
Wenjun Zhao ◽  
Feng Liu ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Surface Diffusion ◽  
Lattice Mismatch ◽  
Core Shell ◽  
Syringe Pump ◽  
Seeded Growth ◽  
Gold Nanocrystals

Gold@palladium–gold nanocrystals with a tunable branched shape are prepared via seeded growth, where the use of a syringe pump allows the manipulation over reaction kinetics as coupled by surface diffusion and strain caused by lattice mismatch.

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.

Environmentally Benign In Situ Synthesis of Gold Nanotapes Using Carboxymethyl Cellulose

2008 ◽  
Vol 8 (7) ◽  
pp. 3610-3615 ◽  
Author(s):  
Rama Ranjan Bhattacharjee ◽  
Md. Harunar Rashid ◽  
Tarun K. Mandal
Keyword(s):  
Carboxymethyl Cellulose ◽  
Environmentally Benign ◽  
Cellulose Derivatives ◽  
Gold Nanocrystals ◽  
X Ray ◽  
Transmission Electron ◽  
One Step ◽  
Wet Chemical ◽  
Spherical Gold Nanoparticles

An environmentally friendly one-step wet-chemical approach has been described for controlling the shape of gold nanocrystals at ambient temperature. In this approach, sodium salt of carboxymethyl cellulose (NaCMC)has been used as a reducing-cum-stabilizing agent for the in situ generation of gold nanotapes from an aqueous chloroaurate ion. Transmission electron microscopy confirmed the formation of tape-shaped gold nanostructures. These gold nanotapes exhibited interesting optical properties. The nature of crystallinity of the nanotapes has been studied by X-ray diffractometry. Control experiments with other cellulose derivatives resulted in the formation of only spherical gold nanoparticles.

One-Step Synthesis of Highly Dispersed Gold Nanocrystals on Silica Spheres

Langmuir ◽  
2007 ◽  
Vol 23 (23) ◽  
pp. 11421-11424 ◽  
Author(s):  
Nopphawan Phonthammachai ◽  
Timothy J. White
Keyword(s):  
Silica Spheres ◽  
Gold Nanocrystals ◽  
Highly Dispersed ◽  
One Step ◽  
Dispersed Gold

Electrical and Electrochemical Properties of Nanocomposite Thin Films Formed by Exchange-Precipitation Route from Nanocrystals and Organic Cross-Linkers

1999 ◽  
Vol 598 ◽  
Author(s):  
Frank L. Leibowitz ◽  
Wenxia Zheng ◽  
Mathew M. Maye ◽  
Nam K. Ly ◽  
Chuan-Jian Zhong
Keyword(s):  
Thin Films ◽  
Molecular Recognition ◽  
Electrochemical Properties ◽  
Electrochemical Techniques ◽  
Model System ◽  
Gold Nanocrystals ◽  
Nanocomposite Thin Films ◽  
Potential Applications ◽  
One Step

ABSTRACTThe structural, electrical and electrochemical properties of nanoparticle thin films derived by a one-step exchange-crosslinking-precipitation route were characterized by microscopic, spectroscopic and electrochemical techniques. Thiolate-encapsulated gold nanocrystals of 2-nm and 5-nm core sizes and alkyldithiol crosslinkers were studied as a model system. The mixing of the two components in solutions allowed sequential exchanging, crosslinking and precipitation of dithiol-crosslinked nanocrystal thin films. The films were specularly reflecting and electronically continuous, and have potential applications in catalysis and molecular recognition.

Crystallinity Variation in Seeded Growth of Gold Nanocrystals: the Role of Additive Ag +

2020 ◽  
Vol 5 (15) ◽  
pp. 4447-4453 ◽  
Author(s):  
Gongguo Zhang ◽  
Xiaowei Fu ◽  
Zhiang Liu ◽  
Xiaoqian Luan ◽  
Fengli Qu ◽  
...  
Keyword(s):  
Seeded Growth ◽  
Gold Nanocrystals

Liquid Phase Epitaxy of Si1−xGex(O<×≲1) On Partially Masked Si-Substrates

1987 ◽  
Vol 91 ◽  
Author(s):  
H.-P. Trah ◽  
M.I. Alonso ◽  
M. Konuma ◽  
E. Bauser ◽  
H. Cerva ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Liquid Phase Epitaxy ◽  
X Ray Diffraction ◽  
Seeded Growth ◽  
X Ray ◽  
Si Substrates ◽  
Lateral Overgrowth ◽  
Linear Dimensions ◽  
Transmission Electron ◽  
One Step

ABSTRACTSingle-crystal Si1−x Gex(O<×≲1) layers are grown by seeded growth on partially SiO2-masked Si-substrates, using a one-step liquid phase epitaxy (LPE) process. The seed regions are stripe- and hole-shaped windows in the oxide, having linear dimensions between 1.5 and 100 μm. The windows extend in different orientation on (111) and (100) orientated substrates. Lateral overgrowth over the oxide-masked areas is achieved up to 70 μm in <110>-directions. X-ray diffraction and Raman scattering show that the epitaxial islands are homogeneous and of excellent crystal quality. In the regions of lateral overgrowth the dislocation density is reduced considerably as shown by defect-etching and cross section transmission electron microscopy.

One-step seeded growth of Au nanoparticles with widely tunable sizes

Nanoscale ◽  
2012 ◽  
Vol 4 (9) ◽  
pp. 2875 ◽  
Author(s):  
Chuanbo Gao ◽  
John Vuong ◽  
Qiao Zhang ◽  
Yiding Liu ◽  
Yadong Yin
Keyword(s):  
Au Nanoparticles ◽  
Seeded Growth ◽  
One Step

scholarly journals Micelle-directed chiral seeded growth on anisotropic gold nanocrystals

Science ◽  
2020 ◽  
Vol 368 (6498) ◽  
pp. 1472-1477 ◽  
Author(s):  
Guillermo González-Rubio ◽  
Jesús Mosquera ◽  
Vished Kumar ◽  
Adrián Pedrazo-Tardajos ◽  
Pablo Llombart ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Near Infrared ◽  
Mixed Micelles ◽  
Electromagnetic Spectrum ◽  
Seeded Growth ◽  
Gold Nanocrystals ◽  
Direct Seeded ◽  
Templating Effect ◽  
Surfactant Assisted ◽  
Plasmon Modes

Surfactant-assisted seeded growth of metal nanoparticles (NPs) can be engineered to produce anisotropic gold nanocrystals with high chiroptical activity through the templating effect of chiral micelles formed in the presence of dissymmetric cosurfactants. Mixed micelles adsorb on gold nanorods, forming quasihelical patterns that direct seeded growth into NPs with pronounced morphological and optical handedness. Sharp chiral wrinkles lead to chiral plasmon modes with high dissymmetry factors (~0.20). Through variation of the dimensions of chiral wrinkles, the chiroptical properties can be tuned within the visible and near-infrared electromagnetic spectrum. The micelle-directed mechanism allows extension to other systems, such as the seeded growth of chiral platinum shells on gold nanorods. This approach provides a reproducible, simple, and scalable method toward the fabrication of NPs with high chiral optical activity.

Selective exposition of high and low density crystal facets of gold nanocrystals using the seeded-growth technique

CrystEngComm ◽  
2011 ◽  
Vol 13 (3) ◽  
pp. 850-856 ◽  
Author(s):  
Heidrun A. Keul ◽  
Martin Möller ◽  
Michael R. Bockstaller
Keyword(s):  
Low Density ◽  
Seeded Growth ◽  
Growth Technique ◽  
Gold Nanocrystals
Sign in / Sign up

Export Citation Format

Share Document