This work deals with the electronic characteristics of reactive azodye
s by determining the electrical conductivity at various temperatures.
The structures of solid complexes were identified using IR and XRD tec
hniques. The results indicated that the complexes of reactive dyes wit
h Ni2+, Zr4+, La3+, Ce3+ and Th4+ are electronic semiconductors. The c
oncentration of charge carriers and the density of states are calculat
ed using Seebeck coefficient.