Structural controls of AuNR@mSiO2: tuning of the SPR, and manipulation of the silica shell thickness and structure

2016 ◽  
Vol 4 (13) ◽  
pp. 2614-2620 ◽  
Author(s):  
Zihua Wu ◽  
Qiang Zeng ◽  
Haishui Wang
Keyword(s):  
Shell Thickness ◽  
Silica Shell ◽  
Selective Etching ◽  
Structural Controls

End-selective etching the AuNRs of AuNR@mSiO2 can be managed to produce cavity-possessing, rattle-type, hollow, and shape-adaptive silica-coated nanocomposites.

Effect of silica shell thickness of Fe3O4–SiOx core–shell nanostructures on MRI contrast

2013 ◽  
Vol 15 (3) ◽  
Author(s):  
Hrushikesh M. Joshi ◽  
Mrinmoy De ◽  
Felix Richter ◽  
Jiaqing He ◽  
P. V. Prasad ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Silica Shell ◽  
Core Shell ◽  
Mri Contrast ◽  
Shell Nanostructures

Silica-Shell/Oil-Core Microcapsules with Controlled Shell Thickness and Their Breakage Stress

Langmuir ◽  
2009 ◽  
Vol 25 (14) ◽  
pp. 7962-7966 ◽  
Author(s):  
Michael O’Sullivan ◽  
Zhibing Zhang ◽  
Brian Vincent
Keyword(s):  
Shell Thickness ◽  
Silica Shell

TiO2@Silica nanoparticles in a random laser: Strong relationship of silica shell thickness on scattering medium properties and random laser performance

2014 ◽  
Vol 104 (8) ◽  
pp. 081909 ◽  
Author(s):  
Ernesto Jimenez-Villar ◽  
Valdeci Mestre ◽  
Paulo C. de Oliveira ◽  
Wagner M. Faustino ◽  
D. S. Silva ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Shell Thickness ◽  
Strong Relationship ◽  
Silica Shell ◽  
Random Laser ◽  
Scattering Medium ◽  
Laser Performance ◽  
Relationship Of

Study on the Ag@SiO2 Enhanced the Luminous Intensity of the Terbium Complexes with Benzoic Acid and 1,10-phenanthroline

2014 ◽  
Vol 472 ◽  
pp. 711-714 ◽  
Author(s):  
Bin Yue ◽  
Yuan Li ◽  
Kai Kong ◽  
Hai Bin Chu ◽  
Yong Liang Zhao
Keyword(s):  
Benzoic Acid ◽  
Emission Intensity ◽  
Shell Thickness ◽  
Silica Shell ◽  
Excitation Wavelength ◽  
Core Shell ◽  
Enhanced Fluorescence ◽  
The Core ◽  
Transmission Electron ◽  
Terbium Complexes

Five kinds of terbium complexes have been synthesized respectively with benzoic acid, 1,10-phenanthroline and 2,2'-bipyridine as ligands. The core-shell Ag@SiO2nanocomposites was prepared. The result of transmission electron microscopy (TEM) shows the diameter of the nanosilver is about 50 nm and the thickness of the silica shell is 10, 25 and 80 nm. Combine the nanoparticles composite with terbium complexes, we explore the changes of excitation wavelength and emission intensity. The results show that: by loading the terbium complexes above the different size of nanoparticles, the excitation wavelengths of complexes do not shift, and the emission intensity of the complexes are enhanced in the presence of Ag@SiO2nanoparticles because of metal-enhanced fluorescence (MEF), but at only a limited shell thickness particle region.

Silica Shell/Gold Core Nanoparticles: Correlating Shell Thickness with the Plasmonic Red Shift upon Aggregation

2011 ◽  
Vol 3 (10) ◽  
pp. 3942-3947 ◽  
Author(s):  
Alan Vanderkooy ◽  
Yang Chen ◽  
Ferdinand Gonzaga ◽  
Michael A. Brook
Keyword(s):  
Shell Thickness ◽  
Silica Shell ◽  
Red Shift ◽  
Gold Core ◽  
Core Nanoparticles

Control of Shell Thickness in Silica-Coating of AgI Nanoparticles

2007 ◽  
Vol 29-30 ◽  
pp. 191-194 ◽  
Author(s):  
Y. Kobayashi ◽  
K. Misawa ◽  
M. Takeda ◽  
N. Ohuchi ◽  
A. Kasuya ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Silane Coupling Agent ◽  
Silica Coating ◽  
Silica Shell ◽  
Reaction Conditions ◽  
Stöber Method ◽  
Silane Coupling ◽  
Silica Core ◽  
Teos Concentration ◽  
Shell Particles

Silica-coating of AgI nanoparticles with a Stöber method was carried out to find out reaction conditions for control of the shell thickness. The AgI nanoparticles were prepared from AgClO4 and KI with the use of 3-mercaptopropyltrimethoxysilane (MPS) as a silane coupling agent and dimethylamine (DMA) catalyst for alkoxide hydrolysis. The silica-coating was performed at 4.5×10-6-4.5×10-5 M MPS, 11-20 M water, 0.002-0.1 M DMA and 0.005-0.04 M tetraethylorthosilicate at AgI concentrations of 0.1-1 mM. Consequently, AgI-silica core-shell particles could be prepared with the use of 4.5×10-5 M MPS, 20 M water, 0.01 M DMA and 1 mM AgI. Silica shell thickness could be varied from 15 to 28 nm with an increase in the TEOS concentration from 0.005 to 0.04 M.

Preparation of fluorescent Au–SiO2 core–shell nanoparticles and nanorods with tunable silica shell thickness and surface modification for immunotargeting

2016 ◽  
Vol 4 (32) ◽  
pp. 5418-5428 ◽  
Author(s):  
Prakash D. Nallathamby ◽  
Juliane Hopf ◽  
Lisa E. Irimata ◽  
Tracie L. McGinnity ◽  
Ryan K. Roeder
Keyword(s):  
Biomedical Applications ◽  
Shell Thickness ◽  
Silica Shell ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Size Dependent ◽  
Scalable Methods ◽  
Core Shell Nanoparticles ◽  
Multifunctional Properties

Scalable methods for preparing and modifying Au–SiO2 core–shell nanoparticles provide a platform for engineering size-dependent multifunctional properties for in vivo biomedical applications.

scholarly journals One-pot one-step synthesis of Au@SiO2 core–shell nanoparticles and their shell-thickness-dependent fluorescent properties

RSC Advances ◽  
2019 ◽  
Vol 9 (31) ◽  
pp. 17674-17678 ◽  
Author(s):  
Shan Zhang ◽  
Xiaochuan Xu ◽  
Guoyu Zhang ◽  
Bin Liu ◽  
Jianhui Yang
Keyword(s):  
Shell Thickness ◽  
Silica Shell ◽  
Core Shell ◽  
Core Size ◽  
Fluorescent Properties ◽  
Step Method ◽  
Shell Nanoparticles ◽  
One Pot ◽  
One Step ◽  
Core Shell Nanoparticles

Au@SiO2 core–shell nanoparticles with tunable Au core size and silica shell thickness were prepared by a facile one-pot one-step method.

Sign in / Sign up

Export Citation Format

Share Document