Laser diagnostics of micellar nanoreactors in ZnSO4/water/AOT/heptane reverse microemulsion system

In the article, for the first time, a method has been developed for remote monitoring of the composition of the reaction medium of micellar nanoreactors and for determining the parameters of nanoparticles during their synthesis using Raman spectroscopy. The sensitivity of spectral characteristics to changes in the size of nanoreactors and the concentration of the nanoparticle precursor in reverse ZnSO4/water/AOT/heptane microemulsions has been experimentally established. It has been shown that the intensity of the band of symmetrical SO stretching vibrations in the Raman spectrum of the ZnSO4/water/AOT/heptane microemulsion can be used to determine the concentration of ZnSO4 in the micelle cores with the accuracy of 2.4 %. The calibration dependence of the center of mass position of the symmetrical O-H stretching vibrations band of the specified microemulsion on the micelles diameter ensures the determination of the sizes of micellar nanoreactors with an accuracy of 11%.