 Polymer dielectrics have been used in many applications, but they often suffer from poor thermal stability and low energy storage capacity at higher temperatures. To address this issue, researchers developed a new strategy to tailor structural units for the design of high-temperature polymer dielectrics. They then synthesized 12 representative polymers based on their predictions and tested them experimentally. The results showed that the high-temperature insulation performance decreases when the band gap increases beyond a certain point, which is related to the dihedral angle between neighboring planes of conjugation in the polymers. By optimizing and predicting the structures, the researchers were able to increase the energy storage capacity at temperatures up to 250 degrees Celsius. This strategy could potentially be applied to other polymer dielectrics to improve their performance. This article was authored by Rui Wang, Yu Jishu, Jing Fu, and others. We are article.tv, links in the description below.