mPEG Coated Superparamagnetic Nanoparticles

Name: mPEG Coated Superparamagnetic Nanoparticles
Brand: Biosensis
SKU: SP-mPEG-10
Price: 749.0 USD
Availability: InStock

mPEG coated PrecisionMRX® superparamagnetic iron oxide nanoparticles are uniform and monodisperse with near neutral charge. They are designed for biomedical research and in vivo imaging exhibiting long blood circulation time.

Transmission Electron Microscopy (TEM) negative staining

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Particle Core Diameter

25 + 2 nm (volume average diameter)

Standard Deviation

<10%

Structure

Magnetite (Fe₃O₄)

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SKU: SP-mPEG-10

Size: 10 mg

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Price:

$749.00

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Ships: 1-2 business days

Product Details

Product Description

Monodisperse magnetite (Fe₃O₄) cores (25 ± 2 nm diameter, < 10 % SD) are sequentially coated with an oleic acid layer, an amphiphilic polymer, and a methoxypolyethylene glycol (mPEG, MW 20 kDa) corona, yielding stable aqueous dispersions in HEPES, PBS, and H₂O across pH 4–10. These nanoparticles exhibit a hydrodynamic diameter of ~80-90 nm (Z-average intensity), PDI <0.1 with near-neutral zeta potential. Rigorously characterized by SAXS, TEM, and DLS to ensure high uniformity and batch-to-batch consistency, they are ideal for biomedical research and in vivo imaging applications that require long blood circulation time.

Concentration

+/- 10 mg/mL

Method of Analysis

Rigaku SmartLab Small Angle X-ray Scattering (SAXS); JEOL 1200EX Transmission Electron Microscope (TEM); ASTM Standard E394-09; Dynamic Light Scattering by Malvern Zetasizer Nano ZS

4-10

Storage

4°C, away from light; DO NOT FREEZE

Physical State

Liquid

Buffer

HPLC H₂O (can be diluted using HEPES, PBS, H₂O)

Structure

Magnetite (Fe₃O₄)

Coating Layer

Cores are coated with a layer of oleic acid, a layer of an amphiphilic polymer, and a layer of methoxypolyethylene glycol (mPEG, MW 20,000Da).

Hydrodynamic Diameter

~80-90 nm (Z-average intensity), PDI <0.15

Zeta Potential

~ -13mV

Particle Core Diameter

25 + 2 nm (volume average diameter)

Standard Deviation

<10%

Usage Statement

For Research Use Only

Expiration

12 months from date of receipt

Synonyms

mPEG-NPs

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mPEG Coated Superparamagnetic Nanoparticles

SKU: SP-mPEG-10

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