Spectral investigation of magnetite nanoparticles interaction with charged drugs

In this paper the absorption spectra of drugs combined with the Fe
3
O
4
(magnetite) nanoparticles are analyzed. It is shown that drugs and nanoparticles form complexes by the electrostatic interaction. Also it is found that in order to form the complexes of the positively charged drug with nanoparticles the prior modification of the nanoparticles surface charge is required.