International Laboratory "Hybrid Nanostructures for Biomedicine"

 

Magnetic circular dichroism spectroscopy of superparamagnetic iron oxide nanoparticles (SPIONS) and composites based on them. Investigation of aggregation conditions, optical, and magneto-optical properties of tetrapyrrole compounds (such as phorbide A and its analogs, including the zinc complex of tetraphenylporphyrin and its non-metallic analog). Magnetic circular dichroism (MCD) spectra provide more informative data compared to absorption spectra in identifying electronic transitions corresponding to overlapping absorption bands. The identification of degenerate transitions is possible, even though the absorption spectra in the ultraviolet and visible regions alone may not allow for such identification. MCD spectra offer additional information about the contribution of the magnetic dipole moment, which is determined by the change in intensity of the MCD signal, compared to absorption spectra, where only the contribution of the electric dipole moment predominates.

 

Magnetic circular dichroism spectroscopy of superparamagnetic iron oxide nanoparticles (SPIONS) and composites based on them. Investigation of aggregation conditions, optical, and magneto-optical properties of tetrapyrrole compounds (such as phorbide A and its analogs, including the zinc complex of tetraphenylporphyrin and its non-metallic analog). Magnetic circular dichroism (MCD) spectra provide more informative data compared to absorption spectra in identifying electronic transitions corresponding to overlapping absorption bands. The identification of degenerate transitions is possible, even though the absorption spectra in the ultraviolet and visible regions alone may not allow for such identification. MCD spectra offer additional information about the contribution of the magnetic dipole moment, which is determined by the change in intensity of the MCD signal, compared to absorption spectra, where only the contribution of the electric dipole moment predominates.