【摘要】 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。更多还原

【Abstract】 Three azo dye derivatives with dfferent alkoxy groups such as 2, 5 - dimethyl - 4 - (4’ - nitrophenylazo) anisole (DMNPAA), 1- butoxy - 2, 5 - dimothyl - 4 - (4’ - nitrophenyl) azo benzene (BDMNPAB) and 1 - hexoxy - 2, 5 - dimethyl - 4 - (4’ - nitrophenyl) azo benzene (HDMNPAB) were synthesized. Highly optical transparent and homogeneous films of composites based on PVK: TNF were pre-pared, where azo derivatives have been added not only to provide an electro - optic response but also to plasticize materials. Twp- beam coupling (2BC) experiments and four - wave mixing (FWW) experiments were used to measure the photorefractive effect of these com-posites and a 2BC gain 195cm(-1)(E0 = 84V/μm) and a peak difffaction efficiency of 40% (E0 = 75. 6V/μm) were obtained in composite with BDMNPAB.更多还原