| 摘要 |
<p>An aminium salt compound has the structure expressed by the following formula (I) or (II), and an optical recording layer has a recording layer containing the aminium salt compound. <CHEM> wherein X<-> indicates a monovalent metal complex anion; and R1 through R8 each indicate a hydrogen atom or a monovalent organic residue, and at least one of R1 through R8 is a monovalent organic residue selected from the group consisting of a substituted or unsubstituted alkoxyalkyl group, substituted or unsubstituted alkenyl group, substituted or unsubstituted alkynyl group and substituted or unsubstituted aralkyl group; and n is 1 or 2; and <CHEM> wherein X<-> indicates a monovalent metal complex anion; and R1' through R8' indicate the atoms that, when taken together in combination Rm' and Rm+1' (m = 1, 3, 5 or 7) with a nitrogen atom N, at least one of such combinations forms a substituted or unsubstituted five-membered ring, substituted or unsubstituted six-membered ring or substituted or unsubstituted seven-membered ring; and n is 1 or 2. <IMAGE></p> |
