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

Fingerprint

Nanowires
Polymers
Waveguides
Aluminum Oxide
Wetting
Alumina
Optics and Photonics
Cooling
Rapid quenching
Photonic devices
Liquids
Optical waveguides
Vacuum
Electronic properties
Electron Scanning Microscopy
Freezing
Spectrum Analysis
Dissolution
Melting
Optical properties

Keywords

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

ASJC Scopus subject areas

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

Cite this

Melt-processed polyfluorene nanowires as active waveguides. / O'Carroll, Deirdre M; Lieberwirth, Ingo; Redmond, Gareth.

In: Small, Vol. 3, No. 7, 07.2007, p. 1178-1183.

Research output: Contribution to journalArticle

O'Carroll, Deirdre M ; Lieberwirth, Ingo ; Redmond, Gareth. / Melt-processed polyfluorene nanowires as active waveguides. In: Small. 2007 ; Vol. 3, No. 7. pp. 1178-1183.
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