abstract |
Provided is a near-infrared-absorbing triarylamine derivative having good light resistance, moist heat resistance and solubility. A triarylamine derivative (diimonium compound) obtained, for example, by reacting bis (4-di (n-butyl) aminophenyl) -4-diethylaminophenylamine with silver hexafluoroantimonate. Compound. [Selection figure] None |