Novel luminescent electrospun fibers prepared from conjugated rod-coil block copolymer of poly[2,7-(9,9-dihexylfluorene)]block-poly(methyl methacrylate)
Journal
Macromolecular Rapid Communications
Journal Volume
29
Journal Issue
21
Pages
1711-1715
Date Issued
2008
Author(s)
Abstract
Abstract Novel luminescent electrospun (ES) fibers have been successfully prepared from a conjugated rod–coil block copolymer, poly[2,7‐(9,9‐dihexylfluorene)]‐ block ‐poly(methyl methacrylate) (PF‐ b ‐PMMA) using a single‐capillary spinneret. Experiment results indicate that PF‐ b ‐PMMA ES fibers prepared from THF, THF/DMF (50/50), and DMF contain PF block aggregated structures of dot‐like (5–10 nm), line‐like (10–20 nm), and ellipse‐like structure (25–50 nm), respectively. Such variation of aggregation size leads to a red‐shift of the absorption or luminescence spectra. In addition, the fiber diameters decrease upon enhancing the DMF content. The present study demonstrates that blue light‐emitting ES fibers are successfully prepared from conjugated rod–coil diblock copolymers and their aggregate morphology and photophysical properties could be tuned through use of selective solvent. magnified image
SDGs
Type
journal article