Electronic absorption spectra of Oxazine 750 dye in aqueous solutions and in polyacrylamide hydrogel
matrix with different structural composition were studied at room temperature. The transport and the
solute–solute interactions of the ionic dye in aqueous solutions across the hydrophilic gels were investigated
via exploring spectral properties of the dye-loaded hydrogel. The nature of the dye pair interactions
in these media was discussed using the Kasha exciton theory. In addition, the monomer–dimer equilibrium
of Oxazine 750 in hydrogels with different compositional percentage has been determined by means
of UV–vis spectroscopy and least square fitting methods
کلید واژگان :
Laser dyes Polyacrylamide hydrogel Dye aggregation Molecular exciton theory
