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Poly(tetraarylindenofluorene)s: New stable blue-emitting polymers

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons48086

Jacob,  J.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons49069

Zhang,  J. Y.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons47960

Grimsdale,  Andrew C.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48459

Müllen,  Klaus
MPI for Polymer Research, Max Planck Society;

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Zitation

Jacob, J., Zhang, J. Y., Grimsdale, A. C., Müllen, K., Gaal, M., & List, E. J. W. (2003). Poly(tetraarylindenofluorene)s: New stable blue-emitting polymers. Macromolecules, 36(22), 8240-8245.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-637E-7
Zusammenfassung
The problem of long wavelength emission from ketone defects in polyindenofluorenes can be overcome by the introduction of aryl substituents which are much less susceptible to oxidation. A new polyindenofluorene with octylphenyl side chains has been prepared via a terphenyl intermediate. Unlike alkyl-substituted polyindenofluorenes, this displays stable blue emission in the solid state. Blue-emitting LEDs have been fabricated whose emission is stable at voltages below 10 V, with brightnesses of up to 125 cd/m2 and efficiencies of up to 0.11 cd/A. Furthermore, no emission from ketone defects was detected even in devices run at voltages above 20 V.