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Synthesis and Characterization of Poly(N-alkyl-2,7-carbazole)s: Blue Light-Emitting Materials

Published online by Cambridge University Press:  21 March 2011

J.-F. Morin ,
M. Leclerc ,
I. Lévesque  and
M. D'Iorio
J.-F. Morin
Affiliation:
Département de Chimie, Université Laval, Cité Universitaire, Québec, Canada, G1K 7P4
M. Leclerc
Affiliation:
Département de Chimie, Université Laval, Cité Universitaire, Québec, Canada, G1K 7P4
I. Lévesque
Affiliation:
National Research Council of Canada, Institute for Microstructural Sciences, Montreal Road, Ottawa, Ontario, Canada, K1A OR6
M. D'Iorio
Affiliation:
National Research Council of Canada, Institute for Microstructural Sciences, Montreal Road, Ottawa, Ontario, Canada, K1A OR6
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Abstract

The synthesis of a new class of π-conjugated based on N-alkyl-2,7-carbazole is reported. Two different synthetic pathways were used to obtain 2,7-functionalized carbazole units. The first pathway leads to N-alkyl-2,7-dichlorocarbazole which undergoes a Yamamoto coupling to obtain the homopolymer. The second synthetic method provides N-alkyl-2,7-diiodocarbazole. This monomer allows the utilization of more versatile synthetic tools such as Suzuki and Stille couplings to obtain highly regioregular copolymers. Poly(N-(2-ethylhexyl)-2,7-carbazole) (PEHC) prepared using Yamamoto coupling shows strong pure blue photoluminescence (437 nm) and electroluminescence (432 nm, 225 cd/m2) with no excimer formation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 665: Symposium C – Electronic, Optical and Optoelectronic Polymers and Oligomers , 2001 , C5.14
Copyright
Copyright © Materials Research Society 2001

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References

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