Tough supersoft sponge fibers with tunable stiffness from a DNA self-assembly technique

Chang Kee Lee, Su Ryon Shin, Ji Young Mun, Sung Sik Han, Insuk So, Juhong Jeon, Tong Mook Kang, Sun I. Kim, Philip G. Whitten, Gordon G. Wallace, Geoffrey M. Spinks, Seon Jeong Kim

Research output: Contribution to journalArticle

29 Citations (Scopus)


Tough and soft: Highly porous, spongelike materials selfassemble by calcium ion condensation of DNA-wrapped carbon nanotubes (SWNTs-DNA; see picture, IL=ionic liquid). The toughness, modulus, and swellability of the electrically conductive sponges can be tuned by controlling the density and strength of interfiber junctions. The sponges have compliances similar to the softest natural tissue, while robust interfiber junctions give high toughness.

Original languageEnglish
Pages (from-to)5116-5120
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number28
Publication statusPublished - 2009 Jun 29



  • Biosensors
  • Conducting materials
  • DNA structures
  • Nanotubes
  • Sponges

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis

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