Formation of persistent ordered lamellar mesophases in azobenzene-containing silver thiolates and their application in the controlled synthesis of silver nanomaterials

2014 ◽  
Vol 2 (13) ◽  
pp. 2375-2386 ◽  
Author(s):  
Junfei Duan ◽  
Jie Ma ◽  
Bin Wu ◽  
Qian Li ◽  
Jianglin Fang ◽  
...  
Keyword(s):  
Controlled Synthesis ◽  
Two Dimensional ◽  
Silver Nanomaterials ◽  
Controlled Preparation

Mesogenic silver thiolate precursors provide an ideal two-dimensional confined platform for the fascinating controlled preparation of 2D shaped nanomaterials via a layered-precursor-to-lamellar-nanomaterial (LPLM) mechanism.

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>

A small molecular, a big scissoring effect: sodium dodecyl sulfate working on two-dimensional metal organic frameworks

CrystEngComm ◽  
2021 ◽  
Author(s):  
Qing Luo ◽  
Zhen Ding ◽  
Huamin Sun ◽  
Zhen Cheng ◽  
Naien SHI ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Active Sites ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Sodium Dodecyl ◽  
Advanced Materials ◽  
Controlled Synthesis ◽  
Two Dimensional ◽  
Dodecyl Sulfate ◽  
Metal Organic

Ultrathin two-dimensional (2D) metal-organic framework (MOF) nanosheets are prosperous advanced materials due to their particularly thin thickness and exposed active sites. The difficulty in the controlled synthesis of 2D MOF...

Controlled Synthesis of Two-Dimensional Networked Gold Nanowires and Microkites by Sodium Carboxymethyl Cellulose-Surfactant Soft Template

2011 ◽  
Vol 399-401 ◽  
pp. 585-588 ◽  
Author(s):  
Chun Rong Wang ◽  
Xian Zai Yan ◽  
Li Li Yu ◽  
Huang Zhou
Keyword(s):  
Carboxymethyl Cellulose ◽  
Sodium Dodecyl ◽  
Potential Method ◽  
Sodium Carboxymethyl Cellulose ◽  
Soft Template ◽  
Controlled Synthesis ◽  
Gold Nanowires ◽  
Two Dimensional ◽  
Anionic Polymer ◽  
Metal Structures

A novel soft template method is reported to control gold nano or microstructrues. Gold nanowires with two-dimensional (2-D) network structure were prepared by anionic polymer (sodium carboxymethyl cellulose, CMC) reduction of HAuCl4. Big gold microkites were synthesized using CMC-cationic surfactant (dodecyl trimethyl ammonium chloride, DTAC) templates. Quasi-sphericSubscript textal gold nanopartilces were obtained through CMC-anionic surfactant (sodium dodecyl sulfate, SDS) templates. Electron diffraction suggested that the 2-D networked nanowires and microkite heads were single crystalline. Ultraviolet visible (UV-vis) absorption spectrum of gold structure obtained showed that there were anisotropic structure formed in reacted solutions. It is potential method to gain preferred noble metal structures by this soft template.

Recent Advances in the Controlled Synthesis and Catalytic Applications of Two-Dimensional Rhodium Nanomaterials

2020 ◽  
Vol 3 (1) ◽  
pp. 121-133
Author(s):  
Jinwen Yin ◽  
Juan Wang ◽  
Yangbo Ma ◽  
Jinli Yu ◽  
Jingwen Zhou ◽  
...  
Keyword(s):  
Controlled Synthesis ◽  
Two Dimensional ◽  
Recent Advances ◽  
Catalytic Applications

Controlled Synthesis of CeO2 Nanostructure via Electrospinning and Chemical Etching

2012 ◽  
Vol 622-623 ◽  
pp. 811-815
Author(s):  
Qi Ming Li ◽  
Hong Liang Zhang ◽  
Fang Li ◽  
Hern Kim
Keyword(s):  
Chemical Etching ◽  
Controlled Synthesis ◽  
Two Dimensional ◽  
Processing Conditions ◽  
Electrospun Nanofiber ◽  
Porous Films ◽  
Sem Images ◽  
Etching Technique ◽  
Treatment Conditions

Combining the versatility of electrospinning and chemical etching technique enables selective controlled synthesis of CeO2nanostructure. The as-prepared CeO2material exhibits one- or two- dimensional microstructure based on different processing conditions. XRD and EDX characterization demonstrated that SrFeO3crystal particles as template can be introduced into the bulk of CeO2nanofiber using co-electrospinning to optimize related nanostructures. SEM images showed that the electrospun nanofiber of ceria can be transformed into nanoparticles, nanofibers or porous films according to treatment conditions.

Controlled synthesis of porous Co3O4–C hybrid nanosheet arrays and their application in lithium ion batteries

RSC Advances ◽  
2014 ◽  
Vol 4 (58) ◽  
pp. 30573-30578 ◽  
Author(s):  
Jun Wang ◽  
Bing Gao ◽  
Long Zhang ◽  
Rui Li ◽  
Jinpeng Shen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Rapid Development ◽  
Lithium Ion ◽  
Controlled Synthesis ◽  
Two Dimensional ◽  
Functional Material ◽  
Structures And Properties ◽  
Nanosheet Arrays

Two-dimensional Co3O4 nanostructures with porous architectures are experiencing rapid development in functional material fields for their unique structures and properties.

Sign in / Sign up

Export Citation Format

Share Document