在有机物中,给体受体取代的偶氮化合物,由于它们具有几乎最高的二阶非线性光学效应以及作为一类新的、有前景的电光材料而倍受重视。在这方面,材料分子的非中心对称的有序排列是首先重要的。把非线性光学活性分子如偶氮化合物溶于聚合物中,再用电场极化方法得到分子有序排列的聚合物薄膜,这是目前认为最有效的材料宏观形态工程。 In organics, donor-acceptor-substituted azo compounds have drawn much attention due to their almost highest second-order nonlinear optical effects and as a new class of promising electro-optic materials. In this regard, the non-centrosymmetric ordered arrangement of material molecules is of primary importance. The nonlinear optical active molecules such as azo compounds dissolved in polymers, and then the electric field polarization method to get a molecular arrangement of the polymer film, which is currently considered the most effective macroscopic morphological engineering materials.