Preparation and characterization of nanoporous thin films from fully aliphatic polyimides

Hwan Chul Yu, S. Vijay Kumar, Sung Youl Cho, Kazuaki Kudo, Toshio Takayama, Jae Min Oh, Huihun Jung, Joong Gon Kim, Chan Moon Chung

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    5 Scopus citations


    Fully aliphatic polyimides (APIs) were prepared from rel-(1′R, 3S5′S)-spiro[furan-3(2H),6′-[3]oxabicyclo[3.2.1]octane]-2,2′, 4′,5(4H)-tv e etrone (D An) as unsymmetrical spiro dianhydride, and either cis-trans-1,4-diaminocyclohexane (mix-DACH) or trans-1,4-diaminocyclohexane (trans-DACH) as diamine. Structure of all prepared monomers and polymers was confirmed via 1H-NMR and FT-IR. The solubility, optical transparency, and thermal properties of the full APIs were investigated. The solubility and decomposition temperature of the full APIs were found to be correlated with their intermolecular regularity confirmed via wide-angle X-ray diffraction (WAXD). Triblock copoly-imides were synthesized through the incorporation of a thermally labile polymer, poly(propylene glycol) (PPG), into the full APIs, and their thermal properties were studied via thermogravimet-ric analysis (TGA). Nanoporous thin films of the full APIs were prepared via thermolysis of the labile block in the copolyimide films. Phase separation and nanopore formation in the copolymer films were confirmed via atomic force microscopy (AFM) and scanning electron microscopy (SEM), respectively. Nanoporous pores were successfully prepared inside the films.

    Original languageBritish English
    Pages (from-to)6141-6147
    Number of pages7
    JournalJournal of Nanoscience and Nanotechnology
    Issue number7
    StatePublished - Jul 2011


    • Aliphatic Polyimide
    • Nanoporous Film
    • Triblock Copolymer


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