| abstract |
(57) [Summary] [Object] An object of the present invention is to provide a diimonium salt compound having absorption in the infrared region, further improving the light resistance of an organic dye, and excellent in solvent solubility. [Structure] It is characterized by having a structure represented by the following general formula (1). [Outer 1] (In the formula, R 1 to R 8 are substituents having 1 to 8 carbon atoms, and at least one of them is an alkoxyalkyl group or an alkynyl group. Indicates an anion. ) |