Amine groups-functionalized alcohol-soluble polyfluorene derivatives: Synthesis, photophysical properties, and self-assembly behaviors
✍ Scribed by Zeng-Shan Guo; Jian Pei; Zhang-Lin Zhou; Lihua Zhao; Gary Gibson; Sity Lam; James Brug
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 878 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0032-3861
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✦ Synopsis
A polyfluorene derivative with primary amine groups on side chains, poly(9,9-bis(6 0 -aminohexyl)fluorene) (PF-NH 2 ), was prepared through de-protection of its analogue polymer poly(9,9-bis(6 0 -butoxylcarbonylaminohexyl)fluorene) (PF-BOC) with hydrochloric acid followed by neutralizing the salt form of poly(6,6 0 -(9H-fluorene-9,9-diyl)dihexan-1-aminium chloride) (PF-NION). PF-NION had good solubility in methanol, DMSO, and DMF. Scanning electron microscopic images of PF-NH 2 in thin films revealed that intramolecular/intermolecular hydrogen bonding and p-p stacking interactions probably played an important role in the formation of special surface morphologies, which might be beneficial to the molecular ordering and device fabrication. The electroluminescence property of PF-NION was recorded on a simple polymer light-emitting diode (PLED) device configuration of ITO/PEDOT/Polymer/Al. Pure blue electroluminescence is achieved from double-layer PLEDs based on PF-NION as the active material with the CIE of (0.16, 0.08).