Synthesis and Properties of Sulfur-containing Polymers Based on Development of New Chemistry and Useful Method to Sulfur Sources

为了开发一种提高含硫材料产品价值的新技术，开辟硫化学研究的新领域，对新型含硫化合物的合成和评价进行了研究。因此，我们开发了高性能光学聚合物，如9,9-二芳基芴-和9,9'-螺芴-含聚硫醚和聚砜，具有高折射率和低双折射。此外，我们基于芳烃二硫键的动态共价化学和轮烷化学的结合，开发了一种可回收的交联聚合物，在交联反应过程中，主干聚合物和交联剂的位置都发生了变化，但化学结构没有明显变化。

For the purpose of development of a new technology to elevate product value of sulfur-containing materials and a new research field of sulfur chemistry, we investigated the synthesis and evaluation of novel sulfur-containing compounds. As a result, we developed high performance optical polymers such as 9,9-diarylfluorene- and 9,9'-spirobifluorene-containing polythioethers and polysulfones with high refractive index and low birefringence. In addition, we developed a recyclable cross-linked polymer based on a combination of dynamic covalent chemistry of aromatic disulfide bond and rotaxane chemistry, in which both the trunk polymer and the cross-linking agent change their positions without any apparent change in their chemical structures during cross-linking reaction.