A compound of the formula:
wherein
E is an ethenyl group of the formula:
in which
X is H when Y is NO₂;
Y is H when X is NO₂; or
X is CN when Y is CN
which has the capacity to form a crystal in which the molecules are aligned substantially in the same manner giving it non-linear optical properties. The cyrstalline product is thus adapted for use in devices exhibiting non-linear optical effects.
式中的化合物:
其中
E 是式中的
乙烯基:
其中
当 Y 为 NO₂ 时,X 为 H;
当 X 为 NO₂ 时,Y 为 H;或
当 Y 为 CN 时,X 为 CN
其中,X 为 H 时,Y 为 NO₂;Y 为 H 时,X 为 NO₂;或 X 为 CN 时,Y 为 CN,其晶体中的分子排列方式基本相同,因而具有非线性光学特性。因此,这种晶体产品可用于显示非线性光学效应的设备中。