The effect of biocompatible coating layers on magnetic properties of superparamagnetic iron oxide nanoparticles
2004 (English)In: Hyperfine Interactions, ISSN 0304-3843, E-ISSN 1572-9540, Vol. 156, no 1, 257-263 p.Article in journal (Refereed) Published
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.
magnetic nanoparticles, magnetite, superparamagnetism, Mssbauer spectroscopy, biocompatible coating, particles, dextran
IdentifiersURN: urn:nbn:se:kth:diva-23764DOI: 10.1023/B:HYPE.0000043238.36641.7bISI: 000224130500040ScopusID: 2-s2.0-33845780840OAI: oai:DiVA.org:kth-23764DiVA: diva2:342463
QC 20100525 QC 20111020. 27th International Conference on the Applications of the Mossbauer Effect. Muscat, OMAN. SEP 21-25, 2003 2010-08-102010-08-102011-10-26Bibliographically approved