Synthesis, Morphology and Photophysical Properties of Rod-Coil Copolymers

Abstract:

The synthesis, morphology, and photophysical properties of poly[2,7-(9,9- dihexylfluorene)]-block-poly(2-vinyl pyridine) (PF-b-P2VP) with different coil lengths in mixed solvents of THF/methanol are reported. A flakes-like lamellar morphology is observed at a short coil length of PF-b-P2VP. As the coil length increases, a spherical and large compound micelle is formed. Upon further increase of the coil length, the morphological transformation from spherical micelles to long rod-like structures is observed. TGA results indicate a good thermal stability of the prepared copolymers. The spectra of optical absorption for the PF-b-P2VP in solution have a blue shift when the fraction of methanol in the mixed solvent increases. The present study shows that the significance of the rod/coil ratio and selective solvent content on the aggregate morphologies and photophysical properties of the rod-coil block copolymers.

• Periodical: Advanced Materials Research (Volumes 79-82)
• Pages: 2095-2098
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.79-82.2095
• Online since: August 2009
• Authors: Yang Yen Yu, Wen Chen Chien, Chung Yi Hsu
• Keywords: Morpholoy, Photophysics, Poly(2-Vinyl Pyridine), Polyfluorene, Rod-Coil Copolymers

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