The following amminium salt or diimmonium salt compounds which are appropriate for light recording media being excellent in record reproduction characteristics and storage stability, infrared cut filters being highly tolerant against light and heat, etc. The above compounds are amminium salt or diimmonium salt compounds consisting of an amminium cation represented by general formula (1), or a diimmonium cation represented by general formula (2), with an anion. In the above formulae, m is an integer of 1 or 2; and optionally substituted amino groups are attached respectively to the 4-positions of four phenyl groups B's bonded to two nitrogen atoms (quaternary nitrogen atoms in formula (2)) bonded to the ring A wherein at least one of these four amino groups is substituted by cyanoalkyl.
下列
铵盐或二
铵盐化合物适用于记录再现特性和储存稳定性极佳的光记录介质、耐光和耐热性极佳的红外切割滤光片等。上述化合物是由通式(1)代表的
铵阳离子或通式(2)代表的二
铵阳 离子与阴离子组成的
铵盐或二
铵盐化合物。在上式中,m 为 1 或 2 的整数;任选取代的
氨基分别连接到与环 A 结合的两个氮原子(式(2)中的季氮原子)结合的四个苯基 B 的 4 位上,其中这四个
氨基中至少有一个被
氰基烷基取代。