Abstract
A series of metallized thiazolylazo dyes have been designed and synthesized. Smooth films on optical glass and single- crystal silicon were prepared by spin-coated method. The UV- Vis absorption spectra of the dyes were measured in solution and in films. The optical constant (complex refractive index N equals n + ik) of the films on single-crystal silicon has been determined using scanning ellipsometer. The variation of the complex refractive index N with wavelength (lambda) was obtained. Thermogravimetric analysis (TGA) and differential thermal analysis (DTA) of the nickel thiazolylazo dye showed clear threshold of thermal decomposition with a sharp exothermic park. Static optical recording tests were carried out. The results show that the nickel thiazolylazo dye is more suitable for use in short-wavelength diode-laser optical recording.
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