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 language | English |
|---|---|
| Pages (from-to) | 5538-5542 |
| Number of pages | 5 |
| Journal | Polymer |
| Volume | 52 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 10 Nov 2011 |
Keywords
- poly(9,9-dihexylfluorene)
- amplified spontaneous emission
- optical-properties
- polyfluorene
- morphology
- polyfluorene thin-films
- conjugated polymer
- beta-phase formation
- crosslinkable