Synthesis and characterization of nanodispersed molecular aggregates of Prussian blue in aerosol OT reverse micelle

J Nanosci Nanotechnol. 2007 Feb;7(2):663-7.


Prussian Blue (PB) nanomolecular aggregates were prepared in a well-characterized, monodispersed biomimicking nanocavities formed by Aerosol OT (AOT) reverse micelle in H2O/AOT/heptane at different omega ([H2O]/[Surfactant]) employing coprecipitation technique. The formed nanomolecular aggregates of PB have been characterized by the UV-visible, Fourier Transformed Infrared (FTIR) spectroscopy as well as by Transmission Electron Microscopy (TEM) and Cyclic Voltammetric methods. Visible and FTIR spectroscopic measurements confirm the formation of PB nano aggregates. Experimental results reveal that the molar extinction coefficient of PB nanomolecular aggregates is different for two different regimes of omega of reverse micelles. TEM measurements show that the size of these reverse micellar entrapped nano aggregrates varied with hydration (omega). Studies on these nano sized particles indicate that Fe is present in a single mixed valence state along the Fe-C-N-Fe skeleton in PB and the half wave potential (E1/2) becomes more positive with increase in the size of the nano aggregates.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aerosols
  • Colloids / chemical synthesis
  • Colloids / chemistry
  • Dioctyl Sulfosuccinic Acid / chemistry*
  • Electrochemistry
  • Ferrocyanides / chemical synthesis*
  • Ferrocyanides / chemistry
  • Heptanes / chemistry*
  • Micelles
  • Microscopy, Electron, Transmission
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Particle Size
  • Spectrophotometry, Ultraviolet
  • Spectroscopy, Fourier Transform Infrared
  • Surface-Active Agents / chemistry*


  • Aerosols
  • Colloids
  • Ferrocyanides
  • Heptanes
  • Micelles
  • Surface-Active Agents
  • Dioctyl Sulfosuccinic Acid
  • ferric ferrocyanide