Intrinsic high-<i>k</i>–low-loss dielectric polyimides containing <i>ortho</i>-position aromatic nitrile moieties: reconsideration on Clausius–Mossotti equation
Tianwen Zhu, Qiaoxi Yu, Weiwen Zheng, Runxin Bei, Wenhui Wang, Minming Wu, Siwei Liu, Zhenguo Chi, Yi Zhang, Jiarui Xu
Abstract
Intrinsic high-<italic>k</italic>–low-loss dielectric polyimides containing <italic>ortho</italic>-position aromatic nitrile moieties were synthesized. 2CN-BTDA shows a <italic>D</italic><sub>k</sub> of 4.80, <italic>D</italic><sub>f</sub> of 1.57 × 10<sup>−3</sup> at 1 kHz (25 °C), <italic>E</italic><sub>B</sub> of 219.4 kV mm<sup>−1</sup> with energy density of 1.023 J cm<sup>−3</sup> and <italic>T</italic><sub>g</sub> of 325 °C.
Topics & Concepts
NitrileBicyclic moleculeChemistryCrystallographyStereochemistryOrganic chemistryDielectric materials and actuatorsFerroelectric and Piezoelectric MaterialsSynthesis and properties of polymers