scholarly journals Galvanic Replacement Coupled to Seeded Growth as a Route for Shape-Controlled Synthesis of Plasmonic Nanorattles

2016 ◽  
Vol 138 (36) ◽  
pp. 11453-11456 ◽  
Author(s):  
Lakshminarayana Polavarapu ◽  
Daniele Zanaga ◽  
Thomas Altantzis ◽  
Sergio Rodal-Cedeira ◽  
Isabel Pastoriza-Santos ◽  
...  
Keyword(s):  
Galvanic Replacement ◽  
Controlled Synthesis ◽  
Seeded Growth ◽  
Shape Controlled

Shape-Controlled Synthesis of Silver and Gold Nanostructures

MRS Bulletin ◽  
2005 ◽  
Vol 30 (5) ◽  
pp. 356-361 ◽  
Author(s):  
Benjamin Wiley ◽  
Yugang Sun ◽  
Jingyi Chen ◽  
Hu Cang ◽  
Zhi-Yuan Li ◽  
...  
Keyword(s):  
Medical Application ◽  
Gold Nanostructures ◽  
Polyol Synthesis ◽  
Galvanic Replacement ◽  
Silver Nanostructures ◽  
Controlled Synthesis ◽  
Replacement Reaction ◽  
Silver Nanocubes ◽  
Shape Controlled ◽  
Future Work

AbstractThis article provides a brief account of solution-phase methods that generate silver and gold nanostructures with well-controlled shapes. It is organized into five sections: The first section discusses the nucleation and formation of seeds from which nanostructures grow. The next two sections explain how seeds with fairly isotropic shapes can grow anisotropically into distinct morphologies. Polyol synthesis is selected as an example to illustrate this concept. Specifically, we discuss the growth of silver nanocubes (with and without truncated corners), nanowires, and triangular nanoplates. In the fourth section, we show that silver nanostructures can be transformed into hollow gold nanostructures through a galvanic replacement reaction. Examples include nanoboxes, nanocages, nanotubes (both single- and multi-walled), and nanorattles. The fifth section briefly outlines a potential medical application for gold nanocages.We conclude with some perspectives on areas for future work.

Seeded Growth of Single-Crystal Two-Dimensional Covalent Organic Frameworks

2017 ◽  
Author(s):  
Austin M. Evans ◽  
Lucas R. Parent ◽  
Nathan C. Flanders ◽  
Ryan P. Bisbey ◽  
Edon Vitaku ◽  
...  
Keyword(s):  
Molecular Transport ◽  
Controlled Synthesis ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Seeded Growth ◽  
Covalent Bonds ◽  
Crystalline Materials ◽  
Step Procedure ◽  
Structures And Properties ◽  
2D Polymer

<div> <div> <div> <p>Polymerizing monomers into periodic two-dimensional (2D) networks provides structurally precise, atomically thin macromolecular sheets linked by robust, covalent bonds. These materials exhibit desirable mechanical, optoelectrotronic, and molecular transport properties derived from their designed structure and permanent porosity. 2D covalent organic frameworks (COFs) offer broad monomer scope, but are generally isolated as polycrystalline, insoluble powders with limited processability. Here we overcome this limitation by controlling 2D COF formation using a two- step procedure. In the first step, 2D COF nanoparticle seeds are prepared with approximate diameters of 30 nm. Next, monomers are slowly added to suppress new nucleation while promoting epitaxial growth on the existing seeds to sizes of several microns. The resulting COF nanoparticles are of exceptional and unprecedented quality, isolated as single crystalline materials with micron-scale domain sizes. These findings advance the controlled synthesis of 2D layered COFs and will enable a broad exploration of synthetic 2D polymer structures and properties. </p> </div> </div> </div>

Seeded Growth of Single-Crystal Two-Dimensional Covalent Organic Frameworks

2017 ◽  
Author(s):  
Austin M. Evans ◽  
Lucas R. Parent ◽  
Nathan C. Flanders ◽  
Ryan P. Bisbey ◽  
Edon Vitaku ◽  
...  
Keyword(s):  
Molecular Transport ◽  
Controlled Synthesis ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Seeded Growth ◽  
Covalent Bonds ◽  
Crystalline Materials ◽  
Step Procedure ◽  
Structures And Properties ◽  
2D Polymer

<div> <div> <div> <p>Polymerizing monomers into periodic two-dimensional (2D) networks provides structurally precise, atomically thin macromolecular sheets linked by robust, covalent bonds. These materials exhibit desirable mechanical, optoelectrotronic, and molecular transport properties derived from their designed structure and permanent porosity. 2D covalent organic frameworks (COFs) offer broad monomer scope, but are generally isolated as polycrystalline, insoluble powders with limited processability. Here we overcome this limitation by controlling 2D COF formation using a two- step procedure. In the first step, 2D COF nanoparticle seeds are prepared with approximate diameters of 30 nm. Next, monomers are slowly added to suppress new nucleation while promoting epitaxial growth on the existing seeds to sizes of several microns. The resulting COF nanoparticles are of exceptional and unprecedented quality, isolated as single crystalline materials with micron-scale domain sizes. These findings advance the controlled synthesis of 2D layered COFs and will enable a broad exploration of synthetic 2D polymer structures and properties. </p> </div> </div> </div>

Fluorine-mediated synthesis of anisotropic iron oxide nanostructures for efficient T2-weighted magnetic resonance imaging

Nanoscale ◽  
2021 ◽  
Author(s):  
Tao Sun ◽  
Yiding Liu ◽  
Chunyu Zhou ◽  
Liang Zhang ◽  
Xun Kang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Iron Oxide ◽  
Controlled Synthesis ◽  
Resonance Imaging ◽  
Fluoride Ions ◽  
Oxide Nanostructures ◽  
Weighted Magnetic Resonance Imaging ◽  
Shape Controlled ◽  
Novel Strategy ◽  
Iron Oxide Nanostructures

Herein, we developed a novel strategy for the shape-controlled synthesis of fluorine-doped iron oxide nanostructures with superior r2 values through the introduction of fluoride ions as a morphology controlling agent...

scholarly journals In-Liquid Plasma Process for Size- and Shape-Controlled Synthesis of Silver Nanoparticles by Controlling Gas Bubbles in Water

Materials ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 891 ◽  
Author(s):  
Hyun-Jin Kim ◽  
Jun-Goo Shin ◽  
Choon-Sang Park ◽  
Dae Kum ◽  
Bhum Shin ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Gas Bubbles ◽  
Controlled Synthesis ◽  
Plasma Process ◽  
Size And Shape ◽  
Shape Controlled

Shape-controlled synthesis of flake-like FeNi3 nanoparticles based on sodium lignosulfonate

2021 ◽  
Author(s):  
Hongxia Guo ◽  
Mingye Li ◽  
Zhenping Qin ◽  
Fan Li ◽  
Xuehong Zhang ◽  
...  
Keyword(s):  
Controlled Synthesis ◽  
Sodium Lignosulfonate ◽  
Shape Controlled

Shape-Controlled Synthesis of CdS Nanostructures via a Solvothermal Method

2010 ◽  
Vol 10 (12) ◽  
pp. 5312-5318 ◽  
Author(s):  
Xiuli Wang ◽  
Zhaochi Feng ◽  
Dayong Fan ◽  
Fengtao Fan ◽  
Can Li
Keyword(s):  
Solvothermal Method ◽  
Controlled Synthesis ◽  
Cds Nanostructures ◽  
Shape Controlled

Shape-controlled synthesis of Cu2O microparticles and their catalytic performances in the Rochow reaction

2012 ◽  
Vol 2 (6) ◽  
pp. 1207 ◽  
Author(s):  
Zailei Zhang ◽  
Hongwei Che ◽  
Jiajian Gao ◽  
Yingli Wang ◽  
Xilin She ◽  
...  
Keyword(s):  
Controlled Synthesis ◽  
Shape Controlled ◽  
Catalytic Performances

Equiangular Hexagon-Shape-Controlled Synthesis of Graphene on Copper Surface

2011 ◽  
Vol 23 (31) ◽  
pp. 3522-3525 ◽  
Author(s):  
Bin Wu ◽  
Dechao Geng ◽  
Yunlong Guo ◽  
Liping Huang ◽  
Yunzhou Xue ◽  
...  
Keyword(s):  
Copper Surface ◽  
Controlled Synthesis ◽  
Shape Controlled
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