Preparation of Alkylated and Perfluorinated ZnPc-modified Carbon Nanotubes and their Application as Conductive Fillers for Poly(vinylidene fluoride) Composite Dielectrics

摘要

This study includes the synthesis and application of unsymmetrical zinc phthalocyanines (ZnPcs) 1 and 2 with three tertiary-butylated (tBu) and hexyl-tridecafluoro (C6F13) groups that are further connected with carbon nanotubes (CNTs) through an amide bonding to yield Pc-functionalized CNTs 3 and 4, respectively. The properties of the resulting Pc-CNT complexes are thoroughly investigated using various analytical techniques, revealing that 3 and 4 enhanced the dispersion and adhesion properties of the CNTs to poly(vinylidene fluoride) (PVDF) matrix, and thereby improved the electrical and dielectric properties. Particularly, the presence of long and fluorinated substituents in 4 allowed for better interfacial compatibility compared to alkylated Pc-CNT 3, leading to more stable dielectric behaviors. Our work has demonstrated that perfluorinated and alkylated Pc-CNT complex could be facile and effective approach toward high-performance polymer-based dielectrics.