New Well-Defined Poly(2,7-fluorene) Derivatives: Photoluminescence and Base Doping
Citations Over TimeTop 1% of 1997 papers
Abstract
Well-defined poly(2,7-fluorene) derivatives have been prepared through palladium-catalyzed couplings between various 9,9-disubstituted or 9-monosubstituted 2,7-dibromofluorenes and 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-dioctylfluorene. Using this versatile synthetic method, processable polyfluorenes have been obtained in good yields. In solution, all these neutral yellow polymers exhibit blue emission (maximum of emission around 410 nm) with high quantum yields (up to 0.87). Moreover, novel acidic polyfluorene derivatives have been synthesized (i.e., poly[2,7‘-(alkyl 9,9-dioctyl-7,2‘-bifluorene-9‘-carboxylate)]s) which show, upon base doping, electrical conductivities of 10-6−10-5 S/cm. This new doping method for conjugated polymers could open the way to the preparation of air-stable electron-injecting electrodes. Both photophysical and electrical properties of these polymers are quite promising for the fabrication of efficient blue-light-emitting devices.
Related Papers
- → Polyfluorenes without Monoalkylfluorene Defects(2007)147 cited
- → Evidence for 21-Helicity of Poly[9,9-bis(2-ethylhexyl)fluorene-2,7-diyl](2007)31 cited
- → Light emitting polyfluorene derivatives with three different structural configurations(2004)13 cited
- Synthesis of poly(fluorene) containing end-group of hydroxy(2006)
- → ENHANCING THE PHOTOLUMINESCENCE OF POLYFLUORENE-BASED THIN FILMS VIA ILLUMINATION(2022)