Abstract
We determine the complex refractive indices N(N = n-ik), dielectricconstants ε(ε = ε1-iε2), and absorption coefficients αof a new azo dye [2-(6-methyl-2-benzothiazolyazo)-5-diethylaminophenol(MBADP)]-dopedpolymer and its nickel- and zinc-substituted compounds(Ni-MBADP andZn-MBADP) spin-coated thin films from a scanning ellipsometer in thewavelength 400-700 nm region. Metal chelation strongly (about one times)enhances the optical and dielectric parameters at the peaks and resultsin a large bathochromic shift (50-60 nm) of absorption band.Bathochromic shift of Ni-MBADP is about 10 nm larger than that ofZn-MBADP due to different spatial configurations formed in themetal-azo complexes.
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