论文部分内容阅读
使用二环己基碳酰亚胺(DCC)和N,N 二甲基吡啶(DMAP)催化合成了非线性生色化合物2 炔丙基 4 [4 N,N 二乙基苯偶氮基]苯甲酸酯(PBAB)。与酸催化等法进行比较,DCC/DMAP催化法具有反应条件温和、产率高的优点。用紫外、红外、核磁和元素分析对化合物结构进行表征。测定了其光限幅性能,在低入射激光光强时,透射光强度随入射光强度增加而增加;当入射光强度达151.4GW/cm2透射光强开始偏离线性,呈现非线性光限幅效应。对其限幅机制进行了分析,结果显示产物对1064nm波长激光的限幅机制主要是双光子吸收机制。
Nonlinear chiral compounds 2 were synthesized using dicyclohexylcarbodiimide (DCC) and N, N-dimethylpyridine (DMAP). 2 Propargyl 4 [4 N, N diethylphenylazo] benzoate Acid ester (PBAB). Compared with the acid-catalyzed method, the DCC / DMAP catalytic method has the advantages of mild reaction conditions and high yield. Compound structures were characterized by UV, IR, NMR and elemental analyzes. When the incident light intensity reaches 151.4GW / cm2, the transmitted light intensity starts to deviate from the linearity, showing a nonlinear optical limiting effect . The analysis of the limiting mechanism shows that the limiting mechanism of the 1064nm wavelength laser is the two-photon absorption mechanism.