Octadecene

Example 25

Iron Stearate Complex Synthesis.

The iron stearate was prepared by ligands exchange between iron chloride and sodium stearate in water. At first, 40 mmol of FeCl₃.6H₂O was dissolved in distilled H₂O and mixed with 80 mmol of sodium stearate under vigorous stirring. The mixture was heated, under stirring, at 70° C. for 4 h. The stearate complex was, then, washed several times with warm distilled water (50° C.) to remove the chloride traces and the formed NaCl and then conserved at 4° C.

Synthesis of Nanoplates:

a mixture of 2.08 g (2.32 mmol) of the synthesized stearate, 0.2 mL (0.65 mmol) of oleic acid and 0.705 g (2.32 mmol) of sodium oleate used as surfactants was added to 20 mL of octadecene (90%, Alfa Aesar, bp 318° C.). The mixture was, first, heated at 120° C. in the absence of a reflux condenser for 30 min and then to its boiling temperature (˜318° C.) with a heating rate of 5° C./min and refluxed for 60 min at this temperature under air. After cooling to the room temperature, the NPs were precipitated by the addition of an excess of acetone and washed 3 times by a mixture of hexane/acetone (1/3) followed by centrifugation (14000 rpm, 10 mn). Finally, the as-obtained NPs were easily suspended in organic solvents.