Morphology and characterization of polyimide/polysilsesquioxane hybrid films with meso/macro double porous structure

Kyung Il Kim, Jun Young Lee, Joon Hyun An, Jung Hyun Kim

Research output: Contribution to journalArticle


Supercritical CO2 (ScCO2) can dissolve organic materials easily just by changing temperature and pressure. This property of ScCO2 can be applied to extract some ScCO2-philic organic molecules from matrix material. The ScCO2 was used to generate the meso/macro double porous structure of polyimide/polysilsesquioxane (PI/PSSQ) hybrid film. The morphology of the porous structure was measured by scanning electron microscope (SEM). Here, we demonstrate that the ScCO2 could penetrate into the hybrid thin film and take away the small molecules, which are the by-product (CO2) from the imidization reaction of the PI segment and the solvent remained in the PSSQ segment by sol-gel process.

Original languageEnglish
Pages (from-to)541-545
Number of pages5
JournalJournal of Nonlinear Optical Physics and Materials
Issue number3-4
Publication statusPublished - 2004 Dec


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

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