2D Iron Oxide Nanoparticle Assemblies by Click Chemistry

Chemicals [CAS]

Chemicals
 (Name)

MW [g/mol]

Density [g/mL]

Amount [mmol]

Mass / Volume

Azide-terminated iron oxide NP

3.35 mg

SAM support

5x5 mm

121-44-8

Triethylamine

101.19

0.726

3.7

374 mg / 515 µL

15709-74-7

Bromotris(triphenylphosphine)copper(I)

930.31

0.0069

6.5 mg.

109-99-9

Tetrahydrofuran

72.11

0.889

solvent

5 mL

Keywords

Monolayers, triazoles, nanostructures, copper catalyst, metal catalysis

Instrument

Monowave 300

Description

In a G10 vial the iron oxide nanoparticles were suspended in THF. The self-assembly monolayer support is immersed and trimethylamine and the copper catalyst were added. The vial was sealed and subjected to microwave heating.

Workup

No workup procedure was given in the papers.

Comments

Reaction time was varied from 2 min to 1 h to investigate the assembly process.[1] After 1 h the maximum nanoparticle density on the substrate was obtained.

Later the reaction was raised to 120 °C but still 1 h was required to achieve the same density. [2] The click chemistry under conventional reflux conditions requires 48 h for the same result.

The two-dimensional nanostructure can be used as biosensors and for high density magnetic storage.

References

[1] D. Toulemon et al. Chem. Mater. 2013, 25, 2849−2854

[2] D. Toulemon, et al., Langmuir 2016, 32, 1621–1628