scholarly journals NaF-mediated controlled-synthesis of multicolor NaxScF3+x:Yb/Er upconversion nanocrystals

Nanoscale ◽  
2015 ◽  
Vol 7 (9) ◽  
pp. 4048-4054 ◽  
Author(s):  
Wen-Bo Pei ◽  
Bo Chen ◽  
Lili Wang ◽  
Jiansheng Wu ◽  
Xue Teng ◽  
...  
Keyword(s):  
Controlled Synthesis ◽  
Upconversion Nanocrystals

scholarly journals Controlled Synthesis of NaYF4:Yb,Er Upconversion Nanocrystals as Potential Probe for Bioimaging: A Focus on Heat Treatment

2021 ◽  
Author(s):  
Alireza Kavand ◽  
Christophe A. Serra ◽  
Christian Blanck ◽  
Marc Lenertz ◽  
Nicolas Anton ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Controlled Synthesis ◽  
Upconversion Nanocrystals

Tuning hexagonal NaYbF4 nanocrystals down to sub-10 nm for enhanced photon upconversion

Nanoscale ◽  
2017 ◽  
Vol 9 (36) ◽  
pp. 13739-13746 ◽  
Author(s):  
Ruikai Shi ◽  
Xincan Ling ◽  
Xiaona Li ◽  
Lu Zhang ◽  
Min Lu ◽  
...  
Keyword(s):  
Upconversion Emission ◽  
Controlled Synthesis ◽  
Upconversion Nanocrystals

Controlled synthesis of sub-10 nm hexagonal NaYbF4 upconversion nanocrystals with enhanced upconversion emission was facilely achieved.

Ethylenediaminetetraacetic acid (EDTA)-controlled synthesis of multicolor lanthanide doped BaYF5 upconversion nanocrystals

2011 ◽  
Vol 21 (43) ◽  
pp. 17202 ◽  
Author(s):  
Hailong Qiu ◽  
Guanying Chen ◽  
Liang Sun ◽  
Shuwei Hao ◽  
Gang Han ◽  
...  
Keyword(s):  
Ethylenediaminetetraacetic Acid ◽  
Controlled Synthesis ◽  
Upconversion Nanocrystals

Aspect-Ratio Controlled Synthesis and Tunable Luminescence of YF3:Yb3+/Er3+ Upconversion Nanocrystals

2017 ◽  
Vol 17 (6) ◽  
pp. 3055-3061 ◽  
Author(s):  
G. Murali ◽  
R. K. Mishra ◽  
Jae Myeong Lee ◽  
Young Cheol Chae ◽  
Jongwoo Kim ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Controlled Synthesis ◽  
Upconversion Nanocrystals

A Simple Strategy for the Controlled Synthesis of Ultrasmall Hexagonal-Phase NaYF4 :Yb,Er Upconversion Nanocrystals

ChemPhotoChem ◽  
2017 ◽  
Vol 1 (8) ◽  
pp. 369-375 ◽  
Author(s):  
Xuesong Zhai ◽  
Ying Wang ◽  
Xiaojuan Liu ◽  
Shihu Liu ◽  
Pengpeng Lei ◽  
...  
Keyword(s):  
Hexagonal Phase ◽  
Controlled Synthesis ◽  
Simple Strategy ◽  
Upconversion Nanocrystals

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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