scholarly journals Aggregation-free and high stability core–shell polymer nanoparticles with high fullerene loading capacity, variable fullerene type, and compatibility towards biological conditions

2021 ◽  
Vol 12 (13) ◽  
pp. 4949-4957
Author(s):  
Taejun Eom ◽  
Viktor Barát ◽  
Anzar Khan ◽  
Mihaiela C. Stuparu
Keyword(s):  
High Stability ◽  
Polymer Nanoparticles ◽  
Core Shell ◽  
Loading Capacity ◽  
Polymer Nanoparticle ◽  
High Fullerene ◽  
Fullerene Nanoparticles

A polymer nanoparticle approach to biorelevant and robust fullerene nanoparticles is presented.

scholarly journals Advances and challenges in the field of plasma polymer nanoparticles

2017 ◽  
Vol 8 ◽  
pp. 2002-2014 ◽  
Author(s):  
Andrei Choukourov ◽  
Pavel Pleskunov ◽  
Daniil Nikitin ◽  
Valerii Titov ◽  
Artem Shelemin ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Plasma Polymerization ◽  
Rf Magnetron Sputtering ◽  
Polymer Nanoparticles ◽  
Plasma Polymer ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Plasma Polymers ◽  
Nanostructured Surfaces ◽  
Core Shell Nanoparticles

This contribution reviews plasma polymer nanoparticles produced by gas aggregation cluster sources either via plasma polymerization of volatile monomers or via radio frequency (RF) magnetron sputtering of conventional polymers. The formation of hydrocarbon, fluorocarbon, silicon- and nitrogen-containing plasma polymer nanoparticles as well as core@shell nanoparticles based on plasma polymers is discussed with a focus on the development of novel nanostructured surfaces.

Controllable Preparation of Silver Orthophosphate@Carbon Layer Core/Shell Heterostructure with Enhanced Visible Photocatalytic Properties and Stability

NANO ◽  
2015 ◽  
Vol 10 (02) ◽  
pp. 1550022 ◽  
Author(s):  
Yangcun Xie ◽  
Xiuwen Wang ◽  
Xu Wen
Keyword(s):  
High Stability ◽  
Separation Efficiency ◽  
Visible Region ◽  
Carbon Layer ◽  
Core Shell ◽  
Photogenerated Electrons ◽  
First Time ◽  
Fabrication Parameters ◽  
Controllable Preparation ◽  
High Separation

In this study, silver orthophosphate@carbon layer ( Ag 3 PO 4@ C ) core/shell heterostructure photocatalyst was prepared for the first time. The results showed that a uniform carbon layer was formed around the Ag 3 PO 4. By adjusting the hydrothermal fabrication parameters, the thickness of carbon layer could be easily controlled. Furthermore, the Ag 3 PO 4@ C had remarkable light absorption in the visible region. Photocatalytic tests displayed that the Ag 3 PO 4@ C heterostructures possessed a much higher degradation rate of phenol than pure Ag 3 PO 4 under visible light. The enhanced photocatalytic activity could be attributed to high separation efficiency of photogenerated electrons and holes based on the synergistic effect between carbon as a sensitizer and Ag 3 PO 4. Recycle tests showed that the Ag 3 PO 4@ C core/shell heterostructures maintained high stability over several cycles. The good stability could be attributed to the protection of insoluble carbon layer on the surfaces of Ag 3 PO 4 crystals in aqueous solution.

scholarly journals Preparation of core/shell organic–inorganic hybrid polymer nanoparticles and their application to toughening poly(methyl methacrylate)

RSC Advances ◽  
2021 ◽  
Vol 11 (54) ◽  
pp. 34036-34047
Author(s):  
Jia Xia ◽  
Xia Luo ◽  
Jin Huang ◽  
Jiajun Ma ◽  
Junxiao Yang
Keyword(s):  
Methyl Methacrylate ◽  
Polymer Nanoparticles ◽  
Core Shell ◽  
Hybrid Polymer ◽  
Inorganic Hybrid ◽  
Poly Methyl Methacrylate ◽  
Grafting Reaction

Core/shell organic–inorganic hybrid polymer nanoparticles are synthesized by micellar nucleation, core enlarged polymerization and a grafting reaction in the system.

Observation of intensity dependent phase-separation in photoreactive monomer–nanoparticle formulations under non-uniform visible light irradiation

Soft Matter ◽  
2020 ◽  
Vol 16 (31) ◽  
pp. 7256-7269
Author(s):  
Shreyas Pathreeker ◽  
Fu-Hao Chen ◽  
Saeid Biria ◽  
Ian D. Hosein
Keyword(s):  
Phase Separation ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Core Shell ◽  
Polymer Nanoparticle ◽  
Light Beams

Under irradiation with microscale light beams, polymer–nanoparticle formulations undergo intensity-dependent evolution into either phase separated (core–shell) or homogenous (embedded) morphologies.

scholarly journals Core-Shell Structure Design of Hollow Mesoporous Silica Nanospheres Based on Thermo-Sensitive PNIPAM and pH-Responsive Catechol-Fe3+ Complex

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1832 ◽  
Author(s):  
Weili Peng ◽  
Zeping Zhang ◽  
Minzhi Rong ◽  
Mingqiu Zhang
Keyword(s):  
Mesoporous Silica ◽  
Mesoporous Silica Nanoparticles ◽  
Drug Loading ◽  
Structure Design ◽  
Raw 264.7 Cells ◽  
Core Shell ◽  
Loading Capacity ◽  
Ph Responsive ◽  
Hierarchical Porous ◽  
Hollow Mesoporous Silica

A kind of core-shell hybrid nanoparticle comprised of a hollow mesoporous silica nanoparticles (HMS) core and a copolymer shell bearing N-(3,4-dihydroxyphenethyl) methacrylamide (DMA) and N-isopropylacrylamide (NIPAM) as responsive moieties was prepared. Moreover, the factors that could impact the surface morphology and hierarchical porous structure were discussed. In the presence of Fe3+, catechol-Fe3+ complexes were formed to achieve pH-responsive polymer shell, combining with thermal-sensitiveness of poly(N-isopropylacrylamide). Doxorubicin (DOX) was applied as a model drug and the behaviors of its loading/release behaviors were investigated to prove the idea. The results exhibited a significant drug loading capacity of 8.6% and embed efficiency of 94.6% under 1 mg ml–1 DOX/PBS solution. In fact, the loading capacity of drug can be easily improved to as high as 28.0% by increasing the DOX concentration. The vitro cytotoxicity assay also indicated that the as-prepared nanoparticles have no significant cytotoxicity on RAW 264.7 cells. The in vitro experiment showed that the cumulative release of DOX was obviously dependent on the temperature and pH values. This pH/temperature-sensitive hollow mesoporous silica nanosphere is expected to have potential applications in controlled drug release.

Effect of Cores on Photoluminescence of Hybrid SiO2-Coated CdTe Quantum Dots

2020 ◽  
Vol 20 (9) ◽  
pp. 5478-5485
Author(s):  
Cong Xie ◽  
Yubin Zhao ◽  
Yuxiang Song ◽  
Yingjie Liu ◽  
Yaya Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Stability ◽  
Sol Gel ◽  
Quantum Yields ◽  
Core Shell ◽  
Aqueous Synthesis ◽  
Pl Spectra ◽  
Cdte Qds ◽  
Sol Gel Process ◽  
20 Nm

Compared with conventional semiconductor quantum dots, hybrid SiO2 coated CdTe QDs exhibited high stability, long fluorescent lifetime, high photoluminescence quantum yields, and well biocompatibility. In this paper, CdTe QDs with tunable PL from green to red emitting were prepared by an aqueous synthesis. A sol–gel process resulted in CdTe QDs coated with a hybrid SiO2 shell contained CdS-like clusters to obtain red-shifted PL spectra, increased PL efficiency and high stability. The clusters were formed by the reaction of Cd2+ and S2− ions generated via the decomposition of thioglycolic acid. The clusters around CdTe cores created a core–shell structure which is very similar with traditional semiconductor core–shell QDs. After being coated with a hybrid SiO2 shell, the PL of green-emitting naked CdTe QDs was red-shifted largely (~30 nm) while the PL of yellowemitting CdTe QDs revealed a small red-shifted (~20 nm). Furthermore, The PL of red-emitting naked CdTe QDs was red-shifted much small (less than 10 nm). This phenomenon is ascribed to the change of band gap of CdTe cores with sizes. The red-shift of PL spectra is attributed to the CdS-like clusters around the core rather than the thickness of the hybrid SiO2 shell.

Preparation of Pt(iv)-crosslinked polymer nanoparticles with an anti-detoxifying effect for enhanced anticancer therapy

2017 ◽  
Vol 8 (15) ◽  
pp. 2410-2422 ◽  
Author(s):  
Zihao Zhang ◽  
Yongjing Li ◽  
Jiaxun Wan ◽  
Peihua Long ◽  
Jia Guo ◽  
...  
Keyword(s):  
Anticancer Therapy ◽  
Polymer Nanoparticles ◽  
High Loading ◽  
Uniform Size ◽  
Polymer Nanoparticle ◽  
Crosslinked Polymer

A new kind of Pt(iv)-crosslinked polymer nanoparticle with small, uniform size and high loading of cisplatin has been prepared for greatly attenuating the detoxifying effect of Pt(ii) species.

Dispersion behavior of core–shell silica-polymer nanoparticles

2007 ◽  
Vol 5 (4) ◽  
pp. 300-304 ◽  
Author(s):  
Yi Wang ◽  
Yangchuan Ke ◽  
Jingzi Li ◽  
Shouqin Du ◽  
Yanfeng Xia
Keyword(s):  
Polymer Nanoparticles ◽  
Core Shell ◽  
Dispersion Behavior
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