| abstract |
An optical information recording medium excellent in light resistance capable of high-density recording and reproduction of information by irradiating a semiconductor laser beam having a wavelength of around 405 nm is provided. An optical information recording medium having a recording layer capable of recording information by irradiation with a laser beam of 400 to 410 nm on a substrate, wherein an oxonol dye represented by the general formula (1) is contained in the recording layer. An optical information recording medium containing the oxonol dye and a counter cation of the oxonol dye is a cyanine cation. General formula (1) [Chemical 1] [Wherein, A, B, C and D are electron-withdrawing groups in which the sum of the Hammett σp values of A and B and the sum of the Hammett σp values of C and D are each 0.6 or more, and A And B, C and D may be linked to form a ring, R represents a substituent on the methine carbon, m represents an integer of 0 or 1, and n represents an integer of 0 to 2m + 1. Y t + represents a t-valent cyanine cation, and t represents an integer of 1 to 10. ] [Selection figure] None |