Photoluminescence characteristics for hybrid nanotubes of light emitting poly(3-methylthiophene)coated with copper: Fluorescence effect

Dong Hyuk Park, Mi Yun Jeong, Mikyung Kim, Eun Hei Cho, Dae Chu I. Kim, Hugeun Song, Jeongyong Kim, Tae Kyu Shim, Doseok Kim, Jinsoo Joo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The enhanced nanometer-scale photoluminescence (PL) and quantum yield of hybrid double layered nanotubes (HDLNT5) consisting of a light-emitting poly(3-methylthiophene) (P3MT) nanotube coated with nanometer-scale copper (Cu) metal were observed and presented. The HDLNTs of the Cu coated P3MT (P3MT/Cu) were synthesized through a sequential electrochemical synthetic method in an anodic alumina oxide (A1203) nanoporous template. We confirmed that the Cu nanotubes were covered outside the light emitting P3MT nanotubes based a high resolution transmission electron microscope image. From laser confocal microscope (LCM) PL experiments of an isolated single strand of the P3MT nanotubes and of their HDLNTs, we observed a '-'-1 00 times enhancement of the PL peak intensity for the HDLNTs of P3MT/Cu compared to that of the P3MT single nanotube, which was qualitatively confirmed through the measurement of the quantum yield. The energy and/or charge transfer effects in surface plasmon resonance contributed to the larger enhancement of the PL efficiency of the hybrid P3MT/Cu nanotubes. The PL decay life-time of the excitons of the P3MT nanotubes using a time resolved PL was not changed after the formation of the HDLNTs, implying that the PL enhancement of the hybrid nanotubes might have originated from fluorescence, not phosphorescence.

Original languageEnglish
Pages (from-to)3112-3118
Number of pages7
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number5
DOIs
Publication statusPublished - 2009 May

Keywords

  • Confocal microscope.
  • Hybrid nanotube
  • Photoluminescence
  • Poiy(3-methylthiophene)
  • Quantum yield
  • Surface plasmon

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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