Reactive nature of dopamine as a surface functionalization agent in iron oxide nanoparticles.

@article{Shultz2007ReactiveNO,
  title={Reactive nature of dopamine as a surface functionalization agent in iron oxide nanoparticles.},
  author={Michael D Shultz and J. Ulises Reveles and Shiv N. Khanna and Everett E. Carpenter},
  journal={Journal of the American Chemical Society},
  year={2007},
  volume={129 9},
  pages={2482-7}
}
Dopamine forms an initial structure coordinated to the surface of the iron oxide nanoparticle as a result of improved orbital overlap of the five-membered ring and a reduced steric environment of the iron complex. However, through transfer of electrons to the iron cations on the surface and rearrangement of the oxidized dopamine, a semiquinone is formed. Because of free protons in the system, oxygens on the surface are protonated, which allows for the Fe2+ to be released into the solution as a… CONTINUE READING

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