An Organic Semiconductor Organized into 3D DNA Arrays by “Bottom-up” Rational Design

Xiao Wang, Ruojie Sha, Martin Kristiansen, Carina Hernandez, Yudong Hao, Chengde Mao, James W. Canary, Nadrian C. Seeman

Research output: Contribution to journalArticlepeer-review


A 3D array of organic semiconductors was assembled using a DNA scaffold. An octameric aniline molecule (“octaniline”) was incorporated into a DNA building block based on a dimeric tensegrity triangle. The construct self-assembled to form a 3D crystal. Reversible redox conversion between the pernigraniline and leucoemeraldine states of the octaniline is retained in the crystal. Protonic doping gave emeraldine salt at pH 5, corresponding to the conductive form of polyaniline. Redox cycling within the crystal was visualized by color changes and Raman microscopy. The ease of conversion between the octaniline states suggests that it is a viable electronic switch within a unique 3D structure.

Original languageEnglish (US)
Pages (from-to)6445-6448
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number23
StatePublished - Jun 1 2017


  • DNA tensegrity triangle
  • crystal engineering
  • nanoelectronics
  • polyaniline
  • self-assembly

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry


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