Beta-phase formation in a crosslinkable poly(9,9-dihexylfluorene)

A. J. C. Kuehne, A. R. Mackintosh, R. A. Pethrick

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The synthesis of a crosslinkable poly(9,9-dihexylfluorene) derivative is reported. Vinyl ether moieties allow for photolithographic patterning, resulting in an immiscible polyfluorene network, which enables subsequent wet thin-film processing. The metastable β-phase morphology, inherent to most polyfluorene homopolymers, can be induced in this crosslinkable polymer. This is verified by optical spectroscopy, X-ray diffraction and by thermal analysis. The β-phase in polyfluorenes is of interest due to its superior optical and electrical characteristics compared to the amorphous phase. Here, amplified stimulated emission is studied. Surprisingly, the β-phase polymer exhibits higher emission thresholds than the amorphous analogue.

Original languageEnglish
Pages (from-to)5538-5542
Number of pages5
JournalPolymer
Volume52
Issue number24
DOIs
Publication statusPublished - 10 Nov 2011

Keywords

  • poly(9,9-dihexylfluorene)
  • amplified spontaneous emission
  • optical-properties
  • polyfluorene
  • morphology
  • polyfluorene thin-films
  • conjugated polymer
  • beta-phase formation
  • crosslinkable

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