LIGHT-SENSITIVE POLYMER MATERIAL HAVING FLUORESCENT INFORMATION READING Russian patent published in 2013 - IPC C09K11/06 G03C1/73 G11B7/246 

FIELD: physics.

SUBSTANCE: invention relates to optical information recording materials, particularly archival information recording based on photo-induced fluorescence, with possibility of use in optical memory devices, including three-dimensional optical memory systems for Read Only Memory (ROM). The disclosed light-sensitive polymer material with fluorescent information reading contains a precursor of an organic fluorescent compound (OFC) in form of a solution in an optically transparent copolymer of methyl methacrylate (MMA) and 2,2,2-trichloroethyl methacrylate (TCEMA) or 2,2,2-tribromoethyl methacrylate (TBEMA). Content of OFC in the solution is equal to 0.1-2 wt %. A coloured fluorescent form of OFC is formed under the action of radiation in the range of 250-330 nm. To expand the spectral range of radiation to 500 nm, the material can additionally contain pyrazolines, e.g., 1,3,5-triphenyl pyrazoline.

EFFECT: disclosed light-sensitive material has low colour intensity and fluorescence before exposure, low diffusion mobility of components which sensitise OFC fluorescence, and also widen the radiation band suitable for turning the OFC into a coloured fluorescent form in the long-wave region to 500 nm.

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