New styrylpyridinium imine based dyes and their use in optical layers for optical data recording

摘要

The present invention relates to new styrylpyridinium-imine based dyes and their use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 500 nm. The invention further relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs a styrylpyridinium-imine based dye in the optical layer.