Effect of the number of iron oxide nanoparticle layers on the magnetic properties of nanocomposite LbL assemblies

Dinçer, I.; Tozkoparan, Onur; German, Sergey V.; Маркин, А. В.; Yıldırım, O.; Хомутов, Г.Б.; Gorin, Dmitry A.; Venig, S. B.; Elerman, Y.

doi:10.1016/j.jmmm.2012.04.002

Cited by 22 publications

(14 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The polyelectrolyte composites containing this type of magnetite nanoparticles exhibit the superparamagnetic behavior which was shown on the planar polyelectrolyte composite coatings. [ 31 ]. Variation of the volume fraction of inorganic nanoparticles led us to control the physical properties of microcapsule shells as well as MRI contrast.…”

Section: Methodsmentioning

confidence: 99%

Systemic Administration of Polyelectrolyte Microcapsules: Where Do They Accumulate and When? In Vivo and Ex Vivo Study

et al. 2018

View full text Add to dashboard Cite

Multilayer capsules of 4 microns in size made of biodegradable polymers and iron oxide magnetite nanoparticles have been injected intravenously into rats. The time-dependent microcapsule distribution in organs was investigated in vivo by magnetic resonance imaging (MRI) and ex vivo by histological examination (HE), atomic absorption spectroscopy (AAS) and electron spin resonance (ESR), as these methods provide information at different stages of microcapsule degradation. The following organs were collected: Kidney, liver, lung, and spleen through 15 min, 1 h, 4 h, 24 h, 14 days, and 30 days after intravenous injections (IVIs) of microcapsules in a saline buffer at a dosage of 2.5 × 109 capsule per kg. The IVI of microcapsules resulted in reversible morphological changes in most of the examined inner organs (kidney, heart, liver, and spleen). The capsules lost their integrity due to degradation over 24 h, and some traces of iron oxide nanoparticles were seen at 7 days in spleen and liver structure. The morphological structure of the tissues was completely restored one month after IVI of microcapsules. Comprehensive analysis of the biodistribution and degradation of entire capsules and magnetite nanoparticles as their components gave us grounds to recommend these composite microcapsules as useful and safe tools for drug delivery applications.

show abstract

Section: Methodsmentioning

confidence: 99%

Systemic Administration of Polyelectrolyte Microcapsules: Where Do They Accumulate and When? In Vivo and Ex Vivo Study

et al. 2018

View full text Add to dashboard Cite

show abstract

“…LbLA is realized by the "bottom-up" principle, allowing accurate variations in the thickness and the chemical composition of the coating as well as the volume fraction of nanoparticles. In particular, this technique has been applied to cover glass, quarz and silicon substrates by composite multilayers containing polyelectrolytes and MNPs [10][11][12][13][14]. Also LbLA has been used to fill capillaries of HC-MFs with different materials, such as polymers [15] and metals [16], to reach specific functions [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Enabling magnetic resonance imaging of hollow-core microstructured optical fibers via nanocomposite coating

Noskov

Zanishevskaya²,

Shuvalov³

et al. 2019

Opt. Express

Self Cite

View full text Add to dashboard Cite

Optical fibers are widely used in bioimaging systems as flexible endoscopes that are capable of low-invasive penetration inside hollow tissue cavities. Here, we report on the technique that allows magnetic resonance imaging (MRI) of hollow-core microstructured fibers (HC-MFs), which paves the way for combing MRI and optical bioimaging. Our approach is based on layer-by-layer assembly of oppositely charged polyelectrolytes and magnetite nanoparticles on the inner core surface of HC-MFs. Incorporation of magnetite nanoparticles into polyelectrolyte layers renders HC-MFs visible for MRI and induces the red-shift in their transmission spectra. Specifically, the transmission shifts up to 60 nm have been revealed for the several-layers composite coating, along with the high-quality contrast of HC-MFs in MRI scans. Our results shed light on marrying fiber-based endoscopy with MRI to open novel possibilities for minimally invasive clinical diagnostics and surgical procedures in vivo.

show abstract

“…As a theranostics tool, the liposomes loaded with MNPs have a number of advantages compared with pure maghemite nanoparticles, particularly the higher sensitivity to the magnetic field due to the highest magnetic permeability among the iron oxides [17] and the ability to perform photocatalytic reactions [18].…”

Section: Introductionmentioning

confidence: 99%

Liposomes loaded with hydrophilic magnetite nanoparticles: Preparation and application as contrast agents for magnetic resonance imaging

German

Navolokin

Кузнецова

et al. 2015

Colloids and Surfaces B: Biointerfaces

View full text Add to dashboard Cite

Effect of the number of iron oxide nanoparticle layers on the magnetic properties of nanocomposite LbL assemblies

Cited by 22 publications

References 32 publications

Systemic Administration of Polyelectrolyte Microcapsules: Where Do They Accumulate and When? In Vivo and Ex Vivo Study

Systemic Administration of Polyelectrolyte Microcapsules: Where Do They Accumulate and When? In Vivo and Ex Vivo Study

Enabling magnetic resonance imaging of hollow-core microstructured optical fibers via nanocomposite coating

Liposomes loaded with hydrophilic magnetite nanoparticles: Preparation and application as contrast agents for magnetic resonance imaging

Contact Info

Product

Resources

About