Colloidal stable quantum dots modified by dual functional group polymers for inkjet printing

2017 ◽  
Vol 5 (19) ◽  
pp. 4629-4635 ◽  
Author(s):  
Ting Han ◽  
Ye Yuan ◽  
Xiao Liang ◽  
Yang Zhang ◽  
Chuanxi Xiong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Inkjet Printing ◽  
Colloidal Stability ◽  
Functional Group ◽  
Water Dispersible ◽  
Dual Functional ◽  
Stable Quantum

A new ligand was reported to effectively prepare water-dispersible QDs with remarkable colloidal stability for inkjet printing.

A small heterobifunctional ligand provides stable and water dispersible core–shell CdSe/ZnS quantum dots (QDs)

Nanoscale ◽  
2018 ◽  
Vol 10 (42) ◽  
pp. 19720-19732 ◽  
Author(s):  
Gianluca Salerno ◽  
Simona Scarano ◽  
Marianna Mamusa ◽  
Marco Consumi ◽  
Stefano Giuntini ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Colloidal Stability ◽  
Core Shell ◽  
Water Dispersible

A small heterobifunctional ligand provides easy to handle and hydrophilic QDs with enhanced colloidal stability.

scholarly journals Luminomagnetic Silica-Coated Heterodimers of Core/Shell FePt/Fe3O4 and CdSe Quantum Dots as Potential Biomedical Sensor

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Caio Guilherme Secco de Souza ◽  
João Batista Souza ◽  
Watson Beck ◽  
Laudemir Carlos Varanda
Keyword(s):  
Quantum Dots ◽  
Saturation Magnetization ◽  
Biomedical Applications ◽  
Colloidal Stability ◽  
Silica Coating ◽  
Magnetic Core ◽  
Superparamagnetic Nanoparticles ◽  
Cdse Quantum Dots ◽  
Water Dispersible ◽  
Growth Method

We report the synthesis of a new multifunctional nanomaterial based on silica-coated FePt/Fe3O4-CdSe heteronanostructures, combining luminescent and magnetic properties in a promising bifunctional sensor for biomedical applications. Spherical Fe3O4-coated FePt (FePt/Fe3O4) superparamagnetic nanoparticles (10.8 ± 1.5 nm) with high saturation magnetization and controlled size and shape were obtained using thermal decomposition coupled with seed-mediated growth method. Luminescent property was added to the nanomaterial by using the FePt/Fe3O4 magnetic core as seed and growing the CdSe quantum dots (2.7 ± 0.6 nm) onto its surface in a heterodimer-like structure using the hot-injection approach. The FePt/Fe3O4-CdSe luminomagnetic heteronanostructures were coated with silica shell using the reverse-micelle microemulsion route to avoid solvent-quenching effects. After silica coating, the water-dispersible heteronanostructures showed a diameter of 25.3 ± 2 nm, high colloidal stability, magnetic saturation of around 11 emu g−1, and photoluminescence in the blue-green region, as expected for potential bifunctional platform in biomedical applications. The saturation magnetization of heteronanostructures can be increased to 28 emu g−1 by annealing at 550°C due to the presence of the FePt phase.

scholarly journals Thermo- and Photoresponsive Behaviors of Dual-Stimuli-Responsive Organogels Consisting of Homopolymers of Coumarin-Containing Methacrylate

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 329
Author(s):  
Seidai Okada ◽  
Eriko Sato
Keyword(s):  
Functional Group ◽  
Solution Temperature ◽  
Stimuli Responsive ◽  
Critical Solution Temperature ◽  
Equilibrium Degree ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Dual Functional ◽  
Wide Range ◽  
Increasing Temperature

Coumarin-containing vinyl homopolymers, such as poly(7-methacryloyloxycoumarin) (P1a) and poly(7-(2′-methacryloyloxyethoxy)coumarin) (P1b), show a lower critical solution temperature (LCST) in chloroform, which can be controlled by the [2 + 2] photochemical cycloaddition of the coumarin moiety, and they are recognized as monofunctional dual-stimuli-responsive polymers. A single functional group of monofunctional dual-stimuli-responsive polymers responds to dual stimuli and can be introduced more uniformly and densely than those of dual-functional dual-stimuli-responsive polymers. In this study, considering a wide range of applications, organogels consisting of P1a and P1b, i.e., P1a-gel and P1b-gel, respectively, were synthesized, and their thermo- and photoresponsive behaviors in chloroform were investigated in detail. P1a-gel and P1b-gel in a swollen state (transparent) exhibited phase separation (turbid) through a temperature jump and reached a shrunken state (transparent), i.e., an equilibrium state, over time. Moreover, the equilibrium degree of swelling decreased non-linearly with increasing temperature. Furthermore, different thermoresponsive sites were photopatterned on the organogel through the photodimerization of the coumarin unit. The organogels consisting of homopolymers of coumarin-containing methacrylate exhibited unique thermo- and photoresponsivities and behaved as monofunctional dual-stimuli-responsive organogels.

Black phosphorus quantum dots as dual-functional electron-selective materials for efficient plastic perovskite solar cells

2018 ◽  
Vol 6 (19) ◽  
pp. 8886-8894 ◽  
Author(s):  
Nianqing Fu ◽  
Chun Huang ◽  
Peng Lin ◽  
Mingshan Zhu ◽  
Tao Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Black Phosphorus ◽  
Selective Layer ◽  
Dual Functional ◽  
Black Phosphorus Quantum Dots ◽  
Electron Extraction

Dual-functional black phosphorus quantum dot electron selective layer was designed for plastic perovskite solar cells. The efficient electron extraction and improved perovskite film quality contributed to the reasonably high efficiency.

Green emissive water dispersible silicon quantum dots for fluorescent and colorimetric dual mode sensing of curcumin

2021 ◽  
Author(s):  
Congjie Pan ◽  
Qiaoqiao Wen ◽  
Longfei Ma ◽  
Xuezhen Qin ◽  
Suxiang Feng
Keyword(s):  
Quantum Dots ◽  
Active Ingredient ◽  
Curcuma Longa ◽  
Dual Mode ◽  
Pharmacological Activities ◽  
Silicon Quantum Dots ◽  
Water Dispersible ◽  
Biological And Pharmacological Activities

Curcumin, an active ingredient of Curcuma longa, which possesses good biological and pharmacological activities, is effective in treating of many diseases. Developing simple and sensitive methods for detection of curcumin...

Stable Quantum Dots/Polymer Matrix and Their Versatile 3D Printing Frameworks

2021 ◽  
Author(s):  
Ruda Xu ◽  
Qiao Chen ◽  
Min Xia ◽  
Bing Bai ◽  
Yuemei Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
3D Printing ◽  
Polymer Matrix ◽  
Industrial Applications ◽  
Efficient Utilization ◽  
Stable Quantum ◽  
Bulk Scale ◽  
Scale Matrix

Efficient utilization of quantum dots (QDs) in bulk-scale matrix with good enough performance but small quantity is important in real industrial applications. Including the concern of traditional problems of QDs,...

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