9-Phenyl-5,5 -Diphenyl-3,3 -Bis(3-Sulfopropyl)-Benzoxazolo Carbocyanine Triethyl Ammonium Salt의 합성

Synthesis of 9-Phenyl-5,5 -Diphenyl-3,3 -Bis(3-Sulfopropyl)-Benzoxazolo Carbocyanine Triethyl Ammonium Salt

In this study, benzoxazolo carbocyanine is of industrial importance as green-sensitizing dye in the spectral sensitization. Sensitizing dye was prepared by the reaction of 2-methyl-3-sulfopropyl-4,5-benzoxazolium (inner salt) with triethyl orthobenzoate in the presence of triethylamine. The product was identified by using various analytical tools such as elemental analyzer, IR spectrophotometer, UV-Vis spectrophotometer, 1H-NMR spectrometer, TGA and DSC. The maximum absorption peak in methanol solvent was 507 nm. Therefore, it was concluded that benzoxazolo carbocyanine dye can be used as sensitizing dye for the spectral sensitization of photographic emulsion and color cosmetics.