The confinement of finite amounts of nickel chloride in the hydrophilic core of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelles dispersed in n-heptane has been investigated by FT-IR, UV–vis-NIRand fluorescence spectroscopies. The analysis of experimental data consistently leads to hypothesize thatNiCl2 forms small size ionic clusters stabilized by a monolayer of oriented surfactant molecules. Due toconfinement and interfacial effects, these ionic clusters show peculiar photophysical properties, whichare different from those possessed by the bulk material. From NiCl2/AOT/n-heptane solutions, by evaporationof the organic solvent, interesting salt/surfactant nanocomposites at various salt concentrationshave been prepared and characterised by WAXS. On the other hand, after mix with Na2S-containingdry micellar systems, the formation of NiS nanoparticles have been ascertained by UV–vis spectroscopy.
|Numero di pagine||7|
|Rivista||Journal of Colloid and Interface Science|
|Stato di pubblicazione||Published - 2009|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Colloid and Surface Chemistry