| abstract |
A near-infrared absorbing compound having good solubility for MEK, and a near-infrared absorbing filter produced using the near-infrared absorbing compound are provided. A diimonium compound represented by the following formula (1) and a near-infrared absorbing filter obtained by using the diimonium compound. [Chemical 1] (In the formula (1), R 1 to R 8 represent a branched alkyl group or a C1-C8 linear alkyl group which may have a substituent, provided that R 1 to R 8 At least one of them is a branched alkyl group.) |