| 摘要 |
The present invention relates to salt of anions represented by formula (1) and onium cations derived from dye which can form salt with the anion. [In the formula (1), Z1 and Z2 independently indicate groups having two substituents which release protons from monovalent proton releasing substituents].The onium cations are cations derived from cyanin dye, cations derived triarylmethane dye, cations derived from xanthene dye, or cations derived from anthraquinone dye. |
