The invention provides a selenium-containing polyimide polymer, preparation method and use thereof. The method comprises: (1) polymerizing a selenide diamine monomer with a dianhydride monomer to give a selenium-containing polyamic acid; and (2) performing thermal imidization on the selenium-containing polyamic acid obtained in the step (1) to give a selenium-containing polyimide polymer. In the invention, selenium is introduced into polyimides for increasing refractive index to 1.7-1.82, this greatly improves the defects of low refractive index of the existing polyimide materials, thereby expanding its applications in the optics field.
本发明提供了一种含
硒聚
酰亚胺聚合物及其制备方法和用途。该方法包括:(1)将
硒化二胺单体与二酐单体聚合,得到含
硒聚酰胺酸;(2)对步骤(1)中得到的含
硒聚酰胺酸进行热
酰亚胺化,得到含
硒聚
酰亚胺聚合物。本发明将
硒引入聚
酰亚胺中,使折射率提高到 1.7-1.82,大大改善了现有聚
酰亚胺材料折射率低的缺陷,从而拓展了其在光学领域的应用。