Figure 1From: Hybrid gold-iron oxide nanoparticles as a multifunctional platform for biomedical applicationFTIR spectra of A) Fe 3 O 4 (red), B) FE 3 O 4 -PEI (blue) and C) Fe 3 O 4 -PEI-Au-PEG (orange). Analysis carried out on Nicolett iS5 FTIR with diamond tip iD5 ATR attachment (Thermo Scientific, UK). Samples were freeze dried prior to analysis and 64 scans were run.Back to article page