Nanoscale luminescence and optical waveguiding characteristics of organic CN-TFMBE nanowires and hybrid coaxial nanowires

Yoon Deok Han, Jong H. Kim, Jin Woo Lee, Hyunsoo Lee, Ji Hyun Kim, Jeongyong Kim, Soo Young Park, Jinsoo Joo

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3 Citations (Scopus)


The photoluminescence (PL) and optical waveguiding characteristics of 1-cyano-trans-1,2-bis-(3′,5′-bis-trifluoromethyl-biphenyl)ethylene (CN-TFMBE) nanowires (NWs) and their hybrid coaxial NWs with p-type poly(3-hexylthiophene) (P3HT) were investigated. For nanoscale PL and optical waveguiding experiments, we used a laser confocal microscope (LCM) with a high spatial resolution. The LCM PL peak of the CN-TFMBE single NW was observed at 490 nm, indicating green-blue light emission. The LCM PL intensity of the CN-TFMBE NW as a core was considerably reduced through the hybridization with the P3HT shell, this was directly confirmed by the color CCD and LCM PL mapping images. For the CN-TFMBE single NWs, the decay constant of the optical waveguided PL intensity was estimated to be about 0.21 μm -1, which is better than that of the conventional organic NWs and the CN-TFMBE/P3HT coaxial NWs. We can conclude through our analysis that the outer shell P3HT materials play the role of a luminescence quencher for the core CN-TFMBE NW due to a charge transfer effect.

Original languageEnglish
Pages (from-to)1299-1302
Number of pages4
JournalSynthetic Metals
Issue number13-14
Publication statusPublished - 2012 Aug

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. R0A-2007-000-20053-0 ) and Basic Research Program (CRI; RIAMI-AM0209 ( 0417-20090011 )) and WCU (World Class University) project ( R31-2008-000-10075-0 ) through the NRF funded by the MEST .


  • 1-Cyano-trans-1,2-bis-(3′,5′-bis-trifluoromethyl-biphenyl)ethylene
  • Charge transfer
  • Nanocharacterization
  • Optical waveguide
  • Photoluminescence
  • Poly(3-hexylthiophene)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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