Table 1 Fourier Transform Infrared Spectroscopy spectra characterization.

From: Bioevaluation of superparamagnetic iron oxide nanoparticles (SPIONs) functionalized with dihexadecyl phosphate (DHP)

Absorption [cm−1]

Group

3000–2800

CH2, CH3

1760

C=O, carboxylic acid

1690

C=C, isolated

1740–1600

O=P-OH

1415–1085

P=O

1260–1000

C-O

1040–909

P-O

600

Fe-O

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