| abstract |
The present invention relates to an optical recording medium comprising a substrate, a reflective layer, and a recording layer comprising a compound of formula (I), II or III.n n n Formula In n n n n n n n Formula IIn n n n n n n n Formula IIIn n n n n n n n In Chemical Formulas I to III,n n n R 1 to R 11 are hydrogen or various substituents, but R 1 and R 9 are not simultaneously hydrogen;n n n Y m- is an inorganic, organic or organometallic anion, or a mixture thereof;n n n Z n + is a proton or metal, ammonium or phosphonium cation, or a mixture thereof;n n n m, n and o are each independently an integer from 1 to 3;n n n p and q are each a number from 0 to 4, and the ratios of o, p and q to each other depend on the charge of the bonded sub-structures, positive or negative charges in the compounds of formula (I), (II) or (III). Do not overload.n n n The present invention also provides the use of xanthene perchlorate for the preparation of compounds of formula (I), (II) or (III) having organometallic anions, and the application of a dye layer of the compounds of formula (I), (II) or (III) by spin coating a grooved support Claims the use of lactate. |