The visible absorption spectra of Oxazine 720 dye in aqueous solutions and in polyacrylamide hydrogel
matrix with different compositions were studied at room temperature. The spectral properties of the dyeloaded
hydrogel were also investigated. The transport and the solute–solute interactions of the ionic dye in
aqueous solutions across the hydrophilic gels were calculated. The nature of the interacting pairs in this dye
was discussed using the Kasha exciton theory. Also the monomer–dimer equilibrium in this ionic dye in
water and in different compositions of hydrogel environment has been investigated by means of UV–Vis
spectroscopy.
کلید واژگان :
Oxazine laser dyes, Polyacrylamide hydrogel, Dye aggregation ,Molecular exciton theory
