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合成了不同长度烷氧基取代的偶氮染料：2，5－二甲基－4－（4’－硝基苯基偶氮）苯甲醚（DMNPAA）；正－丁氧基－2，5－二甲基－4－（4’－硝基苯基偶氮）苯（BDMNPAB）；正－己氧基－2，5－二甲基－4－（4’－硝基苯基偶氮）苯（HDMNPAB）。分别将它们与聚乙烯咔唑（PVK）：2，4，7－三硝基芴酮（TNF）掺杂，获得高质量均匀透明的薄膜。用二波耦合（2BC）实验和四波混频（FWM）实验检测它们的光折变效应。结果表明，掺杂BDMNPAB的光折变复合物获得较高的2BC增益系数（195cm(-1)，外加电场E。＝84V／μm）和较高的衍射效率（40％，E。＝75．6V／μm），且BDMNPAB本身兼有增塑作用，而不需要外加增塑剂。
Synthesis of azo dyes of different length alkoxy substitution: 2,5-dimethyl-4- (4’-nitrophenylazo) anisole (DMNPAA); n-butoxy-2,5 (4’-nitrophenylazo) benzene (BDMNPAB); n-hexyloxy-2,5-dimethyl-4- (4’-nitrophenylazo) Benzene (HDMNPAB). They are respectively doped with polyvinylcarbazole (PVK): 2,4,7-trinitrofluorenone (TNF) to obtain a high-quality uniform transparent film. Their photorefractive effects were examined using two-wave coupling (2BC) experiments and four-wave mixing (FWM) experiments. The results show that the photorefractive composite doped with BDMNPAB achieves a higher 2BC gain coefficient (195 cm -1) with an applied electric field of 84 V / μm and a higher diffraction efficiency (40%, E = 75). 6V / μm), and BDMNPAB itself plasticizing effect, without the need for additional plasticizer.