| abstract |
The invention relates to optical data memories containing a preferably transparent substrate that is optionally already coated with one or more reflective layers. An information layer that can be written with light, optionally, one or more reflective layers and, optionally, a protective layer or another substrate or a covering layer are applied to the surface of the preferably transparent substrate. The inventive data memory can be written and read with infrared light, preferably laser light, especially preferred, with light having a wavelength ranging from 750 to 800 nm, particularly from 770 to 790 nm. In addition, the information layer contains a light-absorbing compound and, optionally, a binding agent. The data memory is characterized in that at least one Co(III) phthalocyanine is used as a light-absorbing compound, whereby the Co metal center carries two axial substituents R<1> and R<2> that, independent of one another, represent CN, SCN, alkoxy or alkylthio. |