Article pubs.acs.org/Macromolecules
An Intrinsically Microporous Network Polymer with Good Dielectric Properties at High Frequency Yijie Luo,† Kaikai Jin,† Chunqing He,‡ Jiajia Wang,† Jing Sun,*,† Fengkai He,† Junfeng Zhou,† Yuanqiang Wang,† and Qiang Fang*,† †
Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China ‡ Key Laboratory of Nuclear Solid State Physics, Wuhan University, Wuhan, Hubei 430072, P. R. China S Supporting Information *
ABSTRACT: An intrinsically microporous fluoropolymer has been successfully synthesized through thermo-cross-linking of a functional monomer having a quaternary carbon center and thermopolymerizable trifluorovinyl ether groups as the side chains. Because the monomer has a tetrahedral configuration, the thermo-cross-linking produces spontaneously formed micropores with an average size of 8 Å in the polymer. Because of the existence of the micropores, the fluoropolymer exhibits excellent dielectric properties with dielectric constant (Dk) of 2.36 and dissipation factor (Df) of 1.29 × 10−3 at a frequency of 5 GHz. Moreover, the polymer shows very low water uptake (
