| 摘要 |
Disclosed are a novel indolium compound represented by the general formula (I) below and an optical recording material using such an indolium compound. (I) (In the formula, ring A represents a benzene ring or the like; Rrepresents a group represented by the general formula or the like; Rrepresents an organic group having 1-30 carbon atoms or the like; Yrepresents an alkyl group having 1-10 carbon atoms or the like; Zrepresents an alkyl group having 1-8 carbon atoms, which may be substituted with a halogen group or interrupted by-O-or the like, or the like; Zrepresents an alkyl group having 1-8 carbon atoms, which may be substituted with a halogen group or interrupted by-O-or the like, or the like; a represents an integer of 0-6; b represents an integer of 0-5; Anrepresents a q-valent anion; q represents 1 or 2; and p represents a number required for maintaining electrical neutrality)
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