An optical article exhibits effects attributable to the nonlinear second order polarizability of electromagnetic radiation and comprises a polymer containing within its repeating units polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated .pi. bonding system to an electron acceptor moiety to permit oscillation of the molecular dipoles between a ground state exhibiting a first dipole moment and an excited state exhibiting a different dipole moment, characterized in that the molecular dipoles include as an acceptor moiety a vinyl group geminally substituted by two strong electron withdrawing groups, at least one of which is a sulfonyl moiety.
一种光学制品表现出电磁辐射的非线性二阶极化性质,包括聚合物,其重复单元中包含极性对齐的非中心对称分子偶极子,其具有电子给体基团,通过共轭的π键结构连接到电子受体基团,以允许偶极子在基态(展现第一偶极矩)和激发态(展现不同偶极矩)之间振荡。该制品的特点在于,分子偶极子包括作为受体基团的
乙烯基,其通过两个强电子提取基团进行双取代,其中至少一个是磺酰基团。