The influence of fluorescent silica nanoparticle surface chemistry on the energy transfer processes with lipid bilayers

RSC Advances ◽  
2016 ◽  
Vol 6 (58) ◽  
pp. 52674-52682 ◽  
Author(s):  
L. Zuccarello ◽  
E. Rampazzo ◽  
L. Petrizza ◽  
L. Prodi ◽  
C. Satriano
Keyword(s):  
Energy Transfer ◽  
Surface Chemistry ◽  
Silica Nanoparticles ◽  
Lipid Bilayers ◽  
Silica Nanoparticle ◽  
Transfer Processes ◽  
Nanoparticle Surface

A study of 3D and 2D intracellular FRET processes at the interface between surface tailored silica nanoparticles and lipid bilayers.

The effect of mesoporous silica nanoparticle surface chemistry and concentration on the α-synuclein fibrillation

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 60966-60974 ◽  
Author(s):  
Nayere Taebnia ◽  
Dina Morshedi ◽  
Mohsen Doostkam ◽  
Soheila Yaghmaei ◽  
Farhang Aliakbari ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Surface Chemistry ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Silica Nanoparticle ◽  
Mesoporous Silica Nanoparticle ◽  
Nanoparticle Surface

Surface chemistry/charge and concentration of mesoporous silica nanoparticles have a great impact on the fibrillation process of α-Syn protein.

scholarly journals Impact of silica nanoparticle surface chemistry on protein corona formation and consequential interactions with biological cells

2017 ◽  
Vol 75 ◽  
pp. 16-24 ◽  
Author(s):  
Andréa Kurtz-Chalot ◽  
Christian Villiers ◽  
Jérémie Pourchez ◽  
Delphine Boudard ◽  
Matteo Martini ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Silica Nanoparticle ◽  
Protein Corona ◽  
Biological Cells ◽  
Nanoparticle Surface ◽  
Corona Formation

THE POTENTIAL INTRINSIC AND EXTRINSIC TOXICITY OF SILICA NANOPARTICLES AND ITS IMPACT ON MARINE ORGANISMS

NANO ◽  
2008 ◽  
Vol 03 (04) ◽  
pp. 271-278 ◽  
Author(s):  
HUA ZHANG ◽  
YOLANDA LEUNG ◽  
DANIEL LOUDEN ◽  
ROCKY DE NYS ◽  
ROBERT LAMB
Keyword(s):  
Silica Nanoparticles ◽  
Surface Adsorption ◽  
Silica Nanoparticle ◽  
Marine Organisms ◽  
Water Medium ◽  
Caulerpa Taxifolia ◽  
High Adsorption ◽  
Nanoparticle Surface ◽  
Micron Size ◽  
Penetration Behavior

The intrinsic and extrinsic toxicity of SiO 2 nanoparticles (Aerosil OX50, ϕ ~ 40 nm) are investigated with a comparison to the particles in micron size ( SiO 2 gel, ϕ ~ 1.5 μ m). Nanoparticles potentially functioned as a carrier of harmful substances transfer was assessed by examining the surface adsorption behavior of the nanoparticles towards γ-picoline (4-methylpyridine), recognized as one type of the marine pollutants, as well as the penetration behavior of the nanoparticles towards a typical marine macro-organism (Caulerpa taxifolia). Silica nanoparticle surface can take up to 2.6 molecules/nm2 of γ-picoline in an aqueous solution comparable to the marine environment. These nanoparticles can further travel onto the surface and into the bulk of the algae (Caulerpa taxifolia) with a depth of ~ 1 μm while carrying toxic γ-picoline. The integrated intrinsic and extrinsic toxicity of SiO 2 nanoparticles has a significant effect on the growth of the algae. The large surface area of the silica nanoparticles results in a high adsorption capability and allows the particles to participate in possible toxic carrier activities in water medium towards marine organisms.

Energy transfer processes of working gas in pulse tube

2000 ◽  
Author(s):  
Vincenzo Naso ◽  
Marco Lucentini ◽  
Wei Dong
Keyword(s):  
Energy Transfer ◽  
Pulse Tube ◽  
Transfer Processes

Application of Silica Nanoparticles in the Determination of Herbicides in Environmental Water Samples Using Liquid Chromatography-Mass Spectroscopy

2020 ◽  
Vol 16 (5) ◽  
pp. 748-756
Author(s):  
Mir Waqas Alam ◽  
Tentu Nageswara Rao ◽  
Yarasani Prashanthi ◽  
Vourse Sridhar ◽  
Adil Alshoaibi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Liquid Chromatography ◽  
Silica Nanoparticles ◽  
Solid Phase ◽  
Silica Nanoparticle ◽  
Environmental Water ◽  
Phase Extraction ◽  
Functionalized Nanoparticles ◽  
Supporting Material

Background: Herbicides are very beneficial in the crop yield with the aid of controlling weeds within the agriculture, but several herbicides are chronic in soil. Objective: In this study, nanoparticles and the packages of synthesized novel silica nanoparticles were studied for the preconcentration of herbicides. Methods: These nanoparticles prepared by the Stöber mechanism were purified and functionalized. Nanoparticles thus prepared successfully were used as supporting material for the preconcentration of residues of herbicides in the water. Results: Preconcentration was achieved by preparing the silica-based solid-phase-extraction cartridges. Nanoparticles used for this purpose were within the range of 50-250 nm. An SPE cartridge was prepared by packing 200 mg of silica nanoparticle in the empty cartridge of diameter 5.5 cm and length 0.6 cm in between PTFE frits. Aqueous solutions of 0.1 μg/ml of herbicides were prepared separately, and 10 ml of the solution was passed through the cartridge at the rate of 0.2 ml/min. After passing 10 ml volume of the aqueous solution, residues adsorbed on the cartridge were eluted using 2 ml of acetonitrile. The eluate was injected to determine the herbicide residue adsorbed on the SPE cartridge. Conclusion: In the study, it was found that greater than 90% of the herbicide residues were trapped on silica nanoparticle-based SPE cartridge. An analytical method was developed for the simultaneous determination of these herbicides. The residues were quantified by LC-MS/MS with ESI mode.

Mesoporous Silica Nanoparticles of Hydroxyurea: Potential

2020 ◽  
Vol 10 ◽  
Author(s):  
Kumar Nishchaya ◽  
Swatantra K.S. Kushwaha ◽  
Awani Kumar Rai
Keyword(s):  
Drug Release ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Release Kinetics ◽  
Average Particle Size ◽  
Silica Nanoparticle ◽  
Average Particle ◽  
Independent Variables ◽  
Lower Temperature

Background: Present malignant cancer medicines has the advancement of magnetic nanoparticles as delivery carriers to magnetically accumulate anticancer medication in malignant growth tissue. Aim: In the present investigation, a silica nanoparticles (MSNs) stacked with hydroxyurea were combined and was optimized for dependent and independent variables. Method: In this study, microporous silica nanoparticle stacked with neoplastic medication had been prepared through emulsification followed with solvent evaporation method. Prepared MSNs were optimized for dependent and independent variables. Different formulations were prepared with varying ratio of polymer, lipid and surfactant which affects drug release and kinetics of drug release pattern. The obtained MSNs were identified by FTIR, SEM, drug entrapment, in-vitro drug release, drug release kinetics study, stability testing in order to investigate the nanoparticle characteristics. Results: The percentage drug entrapment of the drug for the formulations F1, F2, F3, was found to be 27.78%, 65.52% and 48.26%. The average particle size for F2 formulation was found to be 520 nm through SEM. The cumulative drug release for the formulations F1, F2, F3 was found to be 64.17%, 71.82% and 32.68%. The formulations were found to be stable which gives controlled drug delivery for 6 hours. Conclusion: From the stability studies data it can be culminated that formulations are most stable when stored at lower temperature or in refrigerator i.e. 5˚C ± 3˚C. It can be concluded that MSN’s loaded with hydroxyurea is a promising approach towards the management of cancer due to its sustained release and less side effects.

scholarly journals Silica nanoparticle supported lipid bilayers for gene delivery

2009 ◽  
pp. 5100 ◽  
Author(s):  
Juewen Liu ◽  
Alison Stace-Naughton ◽  
C. Jeffrey Brinker
Keyword(s):  
Gene Delivery ◽  
Lipid Bilayers ◽  
Silica Nanoparticle ◽  
Supported Lipid Bilayers
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