Physiochemical properties of greatly enhanced photoluminescence of aqueous dispersible upconversion CaF2:Yb/Er nanoparticles

2017 ◽  
Vol 16 (6) ◽  
pp. 890-896 ◽  
Author(s):  
Anees A. Ansari ◽  
Ranvijay Yadav ◽  
S. B. Rai
Keyword(s):  
Metal Complex ◽  
Surface Coating ◽  
Luminescence Properties ◽  
Upconversion Nanoparticles ◽  
Physiochemical Properties ◽  
Enhanced Photoluminescence ◽  
Silica Layers

Highly aqueous soluble CaF2:Yb/Er@CaF2@SiO2 upconversion nanoparticles were prepared via metal complex decomposition rout. Gradually surface coating with an inert CaF2 and silica layers greatly enhanced their optical and luminescence properties, which are highly usable for luminescent biolabeling or optical bio-probe etc.

Enhanced luminescence efficiency of aqueous dispersible NaYF4:Yb/Er nanoparticles and the effect of surface coating

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 22074-22082 ◽  
Author(s):  
Anees A. Ansari ◽  
Ranvijay Yadav ◽  
S. B. Rai
Keyword(s):  
Surface Coating ◽  
Upconversion Nanoparticles ◽  
Luminescence Efficiency ◽  
Silica Layers ◽  
Enhanced Luminescence ◽  
Effect Of Surface

In a general approach, we designed and synthesized monodisperse, well-defined, highly emissive and aqueous dispersible NaYF4:Yb/Er upconversion nanoparticles, and thereafter their surfaces were coated with inert NaYF4 and silica layers.

scholarly journals Chemical modification utilizing a terminal structure exposed on the specific surface of polymer-metal complex nanocrystals

RSC Advances ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 6135-6138
Author(s):  
Ryuju Suzuki ◽  
Tsunenobu Onodera ◽  
Hitoshi Kasai ◽  
Hidetoshi Oikawa
Keyword(s):  
Chemical Modification ◽  
Metal Complex ◽  
Specific Surface ◽  
Luminescence Properties ◽  
Alkylation Reaction ◽  
Polymer Metal ◽  
Polymer Metal Complex ◽  
Terminal Structure

We modified the surface of polymer metal complex nanocrystals (PMC NCs) with the alkylation reaction by utilizing coordinatively unsaturated bipyridine ligands exposed on the (010), and successfully changed the luminescence properties of PMC NCs.

Evaluation of Luminescence Properties of Single Hydrophilic Upconversion Nanoparticles by Optical Trapping

2019 ◽  
Vol 123 (15) ◽  
pp. 10107-10113 ◽  
Author(s):  
Ya-Feng Kang ◽  
Bei Zheng ◽  
Chong-Yang Song ◽  
Cheng-Yu Li ◽  
Zhi-Liang Chen ◽  
...  
Keyword(s):  
Optical Trapping ◽  
Luminescence Properties ◽  
Upconversion Nanoparticles

808 nm excited energy migration upconversion nanoparticles driven by a Nd3+–Trinity system with color-tunability and superior luminescence properties

Nanoscale ◽  
2018 ◽  
Vol 10 (6) ◽  
pp. 2790-2803 ◽  
Author(s):  
Shuai Guo ◽  
Ming-Kiu Tsang ◽  
Wai-Sum Lo ◽  
Jianhua Hao ◽  
Wing-Tak Wong
Keyword(s):  
Energy Migration ◽  
Luminescence Properties ◽  
Upconversion Nanoparticles ◽  
Heating Effects ◽  
Color Tunability

A novel nanostructure is fabricated with an 808 nm excited/Nd3+-sensitized EMU system to avoid over-heating effects, gained with favourable luminescence properties.

scholarly journals Synthesis and Luminescence Properties of (Y, Gd) (P, V)O4:Eu3+, Bi3+Red Nano-phosphors with Enhanced Photoluminescence by Bi3+, Gd3+ Doping

2013 ◽  
Vol 5 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Yong Pu ◽  
Ke Tang ◽  
Da-Chuan Zhu ◽  
Tao Han ◽  
Cong Zhao ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Enhanced Photoluminescence

Synthesis and luminescence properties of NaGdF4: Yb3+, Ce3+, and Ho3+ upconversion nanoparticles doped with Zn2+

CrystEngComm ◽  
2018 ◽  
Vol 20 (19) ◽  
pp. 2663-2668 ◽  
Author(s):  
Ye Kuang ◽  
Jiating Xu ◽  
Chen Wang ◽  
Chuanqing Wang ◽  
Hua Shao ◽  
...  
Keyword(s):  
Crystal Lattice ◽  
Luminescence Properties ◽  
Upconversion Nanoparticles

Due to shrinkage of crystal lattice and formation of F− vacancies, the luminescence intensities show a rise-and-fall change with growing Zn2+ concentration in β-NaGdF4 UCNPs.

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