中文摘要：

以对硝基苯胺、亚硝酸钠和苯胺为原料,采用重氮-偶合反应方法,合成含偶氮基团的生色分子4-（4’-硝基-苯基二氮烯基）-苯胺（NPDA）。将NPDA与手性试剂L（-）-酒石酸、异佛尔酮二异氰酸酯（IPDI）制备新型旋光偶氮聚氨酯（OAAPU）。利用傅里叶红外光谱（FT-IR）、紫外-可见光谱（UV-Vis）和核磁共振等分析手段对所合成的NPDA和OAAPU进行了结构表征。采用差示扫描量热分析仪（DSC）对OAAPU进行了热稳定性表征,其玻璃化转变温度（Tg）为165.1℃,表明具有较高的热稳定性。采用ATR技术,测定了材料在不同波长和不同温度处的折射率（n）,得到了相应的热光系数（dn/dT）。由Sellmeyer色散方程得到了聚合物体系折射率的色散曲线和Sellmeyer系数。结果表明,该材料对研制新型数字热光和全光开关具有一定的意义。

英文摘要：

A chromophore containing azo group,4-（4＇-nitrophenyldiazenyl）-aniline （NPDA）,was synthesized with 4-nitroaniline,sodium nitrite and aniline via diazo-coupling reaction.Novel optically active azo polyurethane （OAAPU） was obtained from NPDA,chiral reagent L（-）-tartaric acid and toluene diisocyanate （IPDI）.The chemical structures of NPDA and OAAPU were characterized by FT-IR,UV-Vis spectroscopy and 1H NMR.The thermal property was characterized using the differential scanning calorimeter （DSC）.The glass transition temperature （Tg） was 165.1℃ and the result showed that the OAAPU had excellent thermal stability.The measurements of refractive index （n） and thermo-optic coefficient （dn/dT） were demonstrated at different wavelengths and temperatures by ATR technique.The refractive index dispersions curve and Sellmeyer coefficients of OAAPU were obtained by Sellmeyer equation.The conclusion has a little significance to develop new the digital optical and thermo-optic switch.