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The effect of biocompatible coating layers on magnetic properties of superparamagnetic iron oxide nanoparticles
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Materials Science and Engineering.
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2004 (English)In: Hyperfine Interactions, ISSN 0304-3843, E-ISSN 1572-9540, Vol. 156, no 1, 257-263 p.Article in journal (Refereed) Published
Abstract [en]

The effect of the surface coating on the magnetic properties of superparamagnetic iron oxide nanoparticles (SPION) with 8 nm in size has been studied. Four different biocompatible coating layers are considered: poly L,L-lactic acid (PLLA), poly epsilon-caprolactone (PCL), bovine serum albumin (BSA) and gold. The presence of coating layer on the surface of SPION is confirmed by FT-IR spectroscopy. Mossbauer spectroscopy and magnetic susceptibility measurements show that for uncoated SPION and Au@SPION the superparamagnetic fraction is retained. The formation of clusters in the case of BSA@SPION and chain-like structure for PCL@SPION and PLLA@SPION increase the inter-particle interactions resulting in hyperfine magnetic structure observed in the Mossbauer spectra at ambient temperature.

Place, publisher, year, edition, pages
2004. Vol. 156, no 1, 257-263 p.
Keyword [en]
magnetic nanoparticles, magnetite, superparamagnetism, Mssbauer spectroscopy, biocompatible coating, particles, dextran
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-23764DOI: 10.1023/B:HYPE.0000043238.36641.7bISI: 000224130500040Scopus ID: 2-s2.0-33845780840OAI: oai:DiVA.org:kth-23764DiVA: diva2:342463
Note
QC 20100525 QC 20111020. 27th International Conference on the Applications of the Mossbauer Effect. Muscat, OMAN. SEP 21-25, 2003 Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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CiteExportLink to record
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