Issue 23, 2012

Core–shell magnetic nanoparticles: a comparative study based on silica and polydopamine coating for magnetic bio-separation platforms

Abstract

Core–shell magnetic nanoparticles (MNPs) offer tremendous opportunities in a large range of applications in biomedicine due to their superior magnetic properties, biocompatibility and suitability for modification. In most cases, these characteristic features are determined by their shell chemistry and morphology. Herein, we demonstrate a comparative study of silica and polydopamine (PDOP) coating onto MNP surfaces based on synthesis, characterization and usage in a bio-separation platform. It was found that monodispersed MNPs may be easily obtained on silica coating of varying shell thickness, whereas a continuous PDOP layer observed around the MNPs prevents the formation of the dispersed form. On the other hand, PDOP coated MNPs exhibited better superparamagnetic behavior and biological modification ability compared to the silica coated form.

Graphical abstract: Core–shell magnetic nanoparticles: a comparative study based on silica and polydopamine coating for magnetic bio-separation platforms

Article information

Article type
Paper
Submitted
17 May 2012
Accepted
22 Sep 2012
First published
25 Sep 2012

Analyst, 2012,137, 5654-5658

Core–shell magnetic nanoparticles: a comparative study based on silica and polydopamine coating for magnetic bio-separation platforms

F. Sahin, E. Turan, H. Tumturk and G. Demirel, Analyst, 2012, 137, 5654 DOI: 10.1039/C2AN36211B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements