Melt-processed polyfluorene nanowires as active waveguides

Deirdre M O'Carroll, Ingo Lieberwirth, Gareth Redmond

Research output: Contribution to journalArticle

109 Citations (Scopus)

Abstract

Poly(9,9-dioctylfluorene) (PFO) polymer nanowires were synthesized by using melt-assisted wetting of porous alumina templates to be used in nanoscale electronic and photonic devices. PFO is a thermally processable polymer that shows thermotropic liquid-crystalline character with melting into a birefringent liquid occurring at 156°C. It also exhibits glassy or semicrystalline phases by rapid quenching or slow cooling for its optical and electronic properties. PFO nanowires were prepared by a melt-assisted template wetting method. A vacuum anneal facilitated melt injection of the polymer into the porous template and controlled cooling solidify the PFO materials. A scanning electron microscopy (SEM) was performed to select dissolution of the alumina template. Single-nanowire imaging and spectroscopy data were acquired, which show that wires can be used as nanoscale active optical waveguides.

Original languageEnglish
Pages (from-to)1178-1183
Number of pages6
JournalSmall
Volume3
Issue number7
DOIs
Publication statusPublished - Jul 2007

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Keywords

  • Conjugated polymers
  • Luminescence
  • Nanowires
  • Organic semiconductors
  • Waveguides

ASJC Scopus subject areas

  • Biomaterials
  • Engineering (miscellaneous)
  • Biotechnology
  • Medicine(all)

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