What is the easiest way to make stable water dispersion of amine/acid coated magnetite nanoparticles synthesized by thermal decomposition? Generally they dispersed in hexane or chloroform. I want to avoid TMAOH because of its toxicity.
Hello,
In general, functionalizing the nanoparticles with polyethylene glycol, commonly known as PEG, would make them soluble in water. Hope this helps!
Thank you very much for the response. If I mix the chloroform dispersion of nanoparticles and water solution of PEG, and evaporate the chloroform at 80 degree C, will the nanoparticles get functionalized properly by PEG?
You can't use just PEG. Use PEG with a gallol or nitrocatechol end group. I think you have to synthesize the PEG since its not commercially available.
In addition to Mr. Riedinger, PEG is actually available commercially with wide range of molecular weights. PEG with weights are used for different applications, since they have difference physical properties. I would recommend researching literature for the specifics to your interest.
Check out this article. This might help you
Effective PEGylation of Iron Oxide Nanoparticles for High Performance In Vivo Cancer Imaging. Advanced Functional Materials, 2011, Volume 21, Issue 8, pages 1498–1504.
Hello ,
u can go for the ligand Exchange ..
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