High density optical storage

Selenophene-containing quinones were prepared to explore their potential use as dyes and photomaterials. They were found to have good physical and chemical properties for use as dyestuffs for laser-driven high-density optical storage media <1996H(43)941, 1996JOC4784>. 2-Aminoselenophene derivatives were synthesized as indicators for measurement of solvent polarity <2002ZNB420>. 

G.A. Ozin, J. Godber, and A. Stein, Very High Density Optical Storage of Data in Silver Sodalites. US Patent 1990 4, 942, 119. 

The idea of increasing the maximum temperature at which a hole can be burnt or can survive after an excursion is very important when one considers the application of PHB to ultra-high density optical storage. Room temperature hole burning has been realized so far only in the case of Sm2+ in alkaline halide crystals and in fluoride or borate glasses.28 It has been reported that an organic system, the dihydrophenazine/fluorene crystal, can be subjected to an excursion to room temperature, with hole recovery when brought back to 4 K. 

A ferrocene moiety-attached spironaphthoxazine derivative, 22a, which isomerizes into a thermally stable merocyanine form, 22b, and its application in rewritable high density optical data storage have been reported by Song et al. [22],... 

Ruger et al. (1987) discuss furthermore the possibility of using submicron magneto-optic domains for high-density data storage. 

---