Amine I(N-H)

-CH2(C-H)

Phosphonate
(P=O, P-OH,P-OM)

 Fer-xygène(Fe-O)

 

Alendronate

1524

1473

1168
1073
913

 -

 

γ-Fe2O3-Alendronate
nanocrystals

1524

1471

1110
1057
1001

 569

 

 

Amide (C=O)

Amide (N-H)

-CH2(C-H)

 Alcohol-OH Phosphonate (P=O,
P-OH, P-OM)

Fer-Oxygen (Fe-O)

Alendronate-PEG

1701

1541

1458

 1350 1138
1095
915
886

-
γ-Fe2O3-Alendronate-
PEGnanocrystals		 1697 1540 1456 1352 1091
1024
972		 580
Table 1: Characteristic Infrared vibration bands for Alendronate and Alendronate-PEG molecules free or grafted on γFe2O3 nanocrystalsurface.