偶氮苯双席夫碱的合成及其热色性

Synthesis and thermochromic behavior of azobenzene-dischiff bases

以对硝基苯甲醛为原料在氮气的保护下 ,用金属镁与甲醇还原得到了偶氮双醛 ,然后再与胺作用 ,得到了 7个偶氮双席夫碱的化合物并应用物理方法进行了表征 .通过加热显微观察 ,它们都具有热色性 ,其中 4个具可逆热色性 ,并且它们的可逆热色性温度在 16 0～ 2 0 0℃ .偶氮双席夫碱的热色化合物的熔点峰及变色峰也通过DSC进行了测定 .

Azobenzene-dischiff bases are synthesized from p-nitrobenzaldchyde as material in which is reduced by metallic magnium and methanol in N 2 atmosphere, which then reacted with deriviatives of amine. Their structures have been characterized by the melting pointing, 1H NMR and elemental analysis. By heating micro-observe,it shows that all the compounds possess thermochromic properties, four of them show color reversibility at temperature in the range of 160～200 ℃. Color changing temperature packs and milting point peaks of azobenzene-dischiff bases are recorded by using the DSC measurement.