Synthesis and Characterization of Electro-Optic Polyurethaneimide-Polyimide Copolymers

Polyurethaneimide prepolymer was synthesized using the synthesized chromophore C containing tricyanofuran, hexafluorodianhydride and phenyl diisocyanate as monomers. Polyimide prepolymers were synthesized using fluorinated aromatic diether dianhydride and fluorinated aromatic diamine as monomers. Po...

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Bibliographic Details
Published in:Journal of macromolecular science. Physics 2023-10, Vol.62 (10), p.531-542
Main Authors: Wang, Long-De, Tong, Ling, Wu, Jian-Wei, Rong, Jie-Wu, Li, Li
Format: Article
Language:English
Subjects:
Chemical synthesis
chromophore
Chromophores
Copolymers
Diamines
Diisocyanates
electro-optic polyurethaneimide-polyimide copolymer
Fluorination
Glass transition temperature
Modulators
Monomers
Optical waveguides
Optics
Polycondensation reactions
polyimide
polymer optical waveguide
Polymers
polyurethaneimide
Prepolymers
Thermal stability
Transition temperatures
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Summary:Polyurethaneimide prepolymer was synthesized using the synthesized chromophore C containing tricyanofuran, hexafluorodianhydride and phenyl diisocyanate as monomers. Polyimide prepolymers were synthesized using fluorinated aromatic diether dianhydride and fluorinated aromatic diamine as monomers. Polyurethaneimide-polyimide (PUI-FPI) copolymers were then synthesized by a polycondensation reaction of the polyimide and polyurethaneimide prepolymers. The electro-optic (EO) PUI-FPI copolymers had a special segment structure and concentrate the advantages of polyurethaneimide and polyimide. The copolymers exhibited good film-forming properties, high glass transition temperature (T g =196 °C), and high thermal stability (T d up to 358 °C). The copolymers possessed a high EO coefficient (γ 33 =72 pm/V) at the 1550 nm wavelength, good long-term electro-poled orientation stability, and low optical propagation loss (1.2-1.4 dB/cm) at 1550 nm. Mach-Zehnder interferometric electro-optic modulators were designed and fabricated using the synthesized copolymer as the waveguide material. The prepared polymer optical waveguide EO modulators showed a good low-frequency electro-optic modulation response. The results showed that the synthesized polyurethaneimide-polyimide copolymers meeted the performance requirements for the preparation of polymeric optical waveguide devices and were suitable as polymeric electro-optic waveguide materials.
ISSN:0022-2348
1525-609X
DOI:10.1080/00222348.2023.2228562