Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 65: Poster 2
MA 65.2: Poster
Freitag, 24. März 2017, 09:30–13:00, P2-OG1
Magnetic properties of porphyrin magnetite nanocomposites — •Apoorva Sharma1, Chalathan Saengruengrit2, Patrick Matthes3, Numpon Insin2, Patchanita Thamyongkit2, Dietrich R.T. Zahn1, Georgeta Salvan1, and Setfan Krause1 — 1Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany — 2Department of Chemistry, Chulalongkorn University, 10330 Bangkok, Thailand — 3Fraunhofer Institute for Electronic Nano Systems, 09126 Chemnitz, Germany
Since the advent of superparamagnetic nanoparticles, their properties have been vastly exploited by both industries and the scientific community. However, very few investigations are so far focused on the integration of such magnetic nanoparticles in an organic matrix for bio-medical applications. We hereby present our work conducted on porphyrin magnetite nanocomposites. The binding of magnetite particles to porphyrin was confirmed by fluorescence microscopy. The magnetic properties of nanoparticles with different geometries (cubes and spheres), sizes (10 nm and 25 nm), and cladding was investigated with superconducting quantum interference device - vibrating sample magnetometry (SQUID-VSM). These properties were observed to be insignificantly influenced by the addition of porphyrin. Furthermore, a comprehensive study of the interaction behaviour among these nanoparticles was performed using the first order reversal curve measurement technique (FORC) [1].
[1]C. R. Pike et al., J. Appl. Phys., vol. 85, no. 9, 1999.