Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2013 Oct 16;8:3977–3990. doi: 10.2147/IJN.S52058

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2013 Yang et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

PMC Copyright notice

The morphological and physicochemical properties of the PEG-USPIO were investigated.

Notes: Images (A) and (B) revealed the size of the iron core (bar =100 nm and =20 nm, respectively). (C) TEM picture of the PEG-USPIO (bar =20 nm). (D) The magnetic property of the PEG-USPIO was assessed by the MPMS. (E) DLS assay demonstrates that the hydrodynamic size of the nanoparticle was approximately 28 nm. (F) The C¹³ NMR spectrum of PEG-OH (below) and PEG-COOH (above). The presence of a carboxyl group peak at 163.8 ppm (red frame) indicates the carboxylation of the terminal hydroxyl.

Abbreviations: DLS, dynamic light scattering; MPMS, magnetic property measurement system; NMR, nuclear magnetic resonance; PEG-USPIO, polyethylene glycol-coated ultrasmall superparamagnetic iron oxide; TEM, transmission electron microscope.