Controlled synthesis of ZnO nanocrystals with column-, rosette-and fiber-like morphologies and their photoluminescence property

2004 ◽  
Vol 88 (1) ◽  
pp. 150-154 ◽  
Author(s):  
Guifu Zou ◽  
Dabin Yu ◽  
Debao Wang ◽  
Wanqun Zhang ◽  
Liqiang Xu ◽  
...  
Keyword(s):  
Photoluminescence Property ◽  
Controlled Synthesis ◽  
Zno Nanocrystals

Shape controlled synthesis of CaMoO4 thin films and their photoluminescence property

2008 ◽  
Vol 181 (5) ◽  
pp. 1249-1257 ◽  
Author(s):  
Ana Paula de Azevedo Marques ◽  
Valeria M. Longo ◽  
Dulce M.A. de Melo ◽  
Paulo S. Pizani ◽  
Edson R. Leite ◽  
...  
Keyword(s):  
Thin Films ◽  
Photoluminescence Property ◽  
Controlled Synthesis ◽  
Shape Controlled

scholarly journals Controlled Synthesis of Hollow Hemispheric ZnO Shells/Cages on Graphite Fiber

2011 ◽  
Vol 2011 ◽  
pp. 1-5
Author(s):  
Xianbin Liu ◽  
Hejun Du ◽  
Zhiyuan Zeng ◽  
Xiao Wei Sun
Keyword(s):  
Growth Mechanism ◽  
Outer Surface ◽  
Growth Process ◽  
Thermal Evaporation ◽  
Controlled Synthesis ◽  
Evaporation Process ◽  
Graphite Fiber ◽  
Growth Experiment ◽  
The Core ◽  
Zno Nanocrystals

Hollow hemispheric ZnO shells/cages are synthesized on graphite fiber via simple thermal evaporation process. The cage-like ZnO structures exhibit micron or submicron size and hollow hemispheric shape with polycrystalline shell made of the ZnO nanocrystals. Controlled time-sequenced growth experiment is conducted to interpret the growth process, which indicates that the growth mechanism of the hollow hemispheric ZnO shells/cages involves formation of Zn particles firstly, followed by oxidation of the outer surface of Zn droplets and meantime sublimation of the core Zn.

Size-controlled synthesis of ZnO nanocrystals from diethylzinc and donor-functionalized alcohols

2011 ◽  
Vol 65 (3) ◽  
pp. 527-529 ◽  
Author(s):  
Elaham Sattarzadeh ◽  
Golamhossein Mohammadnezhad ◽  
Mostafa M. Amini
Keyword(s):  
Controlled Synthesis ◽  
Zno Nanocrystals ◽  
Size Controlled

Controlled synthesis, characterization and photoluminescence property of olive-like tetragonal α-Nd2(MoO4)3

2012 ◽  
Vol 47 (9) ◽  
pp. 2364-2368 ◽  
Author(s):  
Youjin Zhang ◽  
Ao Zheng ◽  
Xiaozhi Yang ◽  
Hongmei He ◽  
Yun Fan
Keyword(s):  
Photoluminescence Property ◽  
Controlled Synthesis

Morphology-controlled synthesis of Y2O3:Eu3+ and the photoluminescence property

2013 ◽  
Vol 581 ◽  
pp. 590-595 ◽  
Author(s):  
Yongsong Liu ◽  
Yangyang Ruan ◽  
Lingling Song ◽  
Wenjun Dong ◽  
Chaorong Li
Keyword(s):  
Photoluminescence Property ◽  
Controlled Synthesis

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>

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