Self-assembled DNA composite membranes

Jongok Won, Su Kyoung Chae, Jong Hak Kim, Hye Hun Park, Yong Soo Kang, Hoon Sik Kim

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


Conductive, self-assembled DNA composite membranes supported by a nano-porous polycarbonate substrate were fabricated. The porous polycarbonate support membranes were modified with Sn2+ positive charges to induce effective DNA adsorption. Optimum pore size of 0.1 μm and high pore density have been realized for track etched nano-porous polycarbonate membrane in the self-assembly process. Proton conductivity and methanol permeability (10 wt.%) were evaluated to be 8.0 × 10-2 S/cm and 5.0 × 10 -7 cm2/s for 1.6 mg/cm2 of DNA loading, respectively. The self-assembled DNA composite membranes exhibit excellent proton conductivity, and enhanced mechanical properties with decreased methanol permeability.

Original languageEnglish
Pages (from-to)113-117
Number of pages5
JournalJournal of Membrane Science
Issue number1-2
Publication statusPublished - 2005 Mar 1

Bibliographical note

Funding Information:
This work was supported by the Korea Research Foundation Grant (KRF-2002-041-D00185).

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation


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