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

为了开发提高含硫材料产品价值的新技术和硫磺化学的新研究领域，我们对新型含硫化合物的合成和评价进行了研究。因此，我们开发了高折射率、低双折射的高性能光学聚合物，如9，9-二芳基荧烯和9，9‘-螺联荧基聚硫醚和聚砜。此外，我们还开发了一种基于芳香族二硫键的动态共价化学和轮烷化学相结合的可回收的交联聚合物，其中主链聚合物和交联剂在交联反应中都改变了位置，化学结构没有任何明显的变化。

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.