Light-emitting color barcode nanowires using polymers: Nanoscale optical characteristics

Dong Hyuk Park, Young Ki Hong, Eun Hei Cho, Mi Suk Kim, Dae Chul Kim, Jihee Bang, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


We report on the light-emitting color barcode nanowires (LECB-NWs), which were fabricated by alternating the electrochemical polymerization of light-emitting polymers with various luminescence colors and efficiencies. The nanoscale photoluminescence characteristics of LECB-NWs were investigated using a laser confocal microscope with a high spatial resolution. The alternating light emissions of the LECB-NWs showed orange-yellow, red, and green colors due to the serial combination of poly(3-butylthiophene), poly(3-methylthiophene), and poly(3,4-ethylenedioxythiophene), respectively, with distinct luminescence intensities. The optical detection sensitivity and stability of LECB-NWs have been enhanced through a nanoscale Cu metal coating onto the NWs, based on surface plasmon resonance coupling and protection against oxidation. The flexibility of the LECB-NWs has been investigated through the folding and unfolding of the NWs by an applied nanotip impetus. The flexible LECB-NWs can be used as highly sensitive optical identification nanosystems for nanoscale or microscale products with complex physical shapes.

Original languageEnglish
Pages (from-to)5155-5162
Number of pages8
JournalACS nano
Issue number9
Publication statusPublished - 2010 Sept 28


  • barcode
  • hybrid nanomaterial
  • light-emitting polymer
  • nanoscale optical characteristics
  • nanowire

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy


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