FIELD: optics.
SUBSTANCE: invention relates to materials for optical recording of information, particularly materials for archival recording of information based on multilayer optical discs, with fluorescence reading. Light-sensitive polymer material with fluorescent information reading includes a precursor of a fluorescent compound of the lactone of Rhodamine B or Rhodamine 19 and a photo-generator of trichloroacetyl pyrazoline of general formula (1), dissolved in optically transparent polymer polymethyl methacrylate or polystyrene or copolymer of methyl methacrylate with ethyl acrylate. Also disclosed is a method of producing trichloracetyl pyrazoline by synthesis of 3-cynamoylcoumarine by condensation of 3-acetylcoumarin with ((4-formylphenyl)azanediyl)-di(ethane-2,1-diiyl)-diacetate followed by condensation of 3-cyano-miscumourin and phenylhydrazine to obtain pyrazolines, which are acylated with trichloroacetic acid chloride in methylene chloride in an ice bath in the presence of triethylamine.
EFFECT: invention enables to obtain a coloured fluorescent form of a precursor of a fluorescent compound under the effect of radiation in the wavelength range of 250–500 nm without introducing additional components into the polymer material.
4 cl, 9 ex, 4 dwg
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