| abstract |
The present invention is an optical recording medium including a base material, a reflective layer, and a recording layer, wherein the recording layer has the formula [L 1 Mr 4 L −2 ] o [A m ] p [Z n + ] q ( I), [L 1 M r -3 L -3] o [A m] p [Z n +] q (II) or [L 3 M r-2 L 4] o [A m] p [Z n +] q compound of formula (III), or include their mesomeric or tautomeric forms if appropriate, wherein, L 1 and L 2 independently of one another, L 3 and L 4 independently of one another, Q 1 is CR 1 Or N, Q 2 is O, S, NR 10 or Q 5 = Q 8 , Q 3 is CR 3 or N, Q 4 is O, S, NR 10 or Q 7 = Q 8 , Q 5 is CR 5 or N, Q 6 is CR 6 or N, Q 7 is CR 7 or N, Q 8 is CR 8 or N, Q 9 Is O, S, NR 10 or Q 6 = Q 8 ; M r , A m− , Z n + , R 2 , R 9 relate to an optical recording medium as defined in the claims. |