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Star-like Aromatic Conjugated Polymers and Dendrimers for OLEDs

Published online by Cambridge University Press:  01 February 2011

Irina A. Khotina ,
Diana Yu. Baranova ,
Natalia S. Burenkova ,
Anastasia A. Gurskaja ,
Peter M. Valetsky  and
Lyudmila M. Bronstein
Irina A. Khotina
Affiliation:
A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences, Vavilova str. 28, 117813, Moscow, Russia
Diana Yu. Baranova
Affiliation:
A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences, Vavilova str. 28, 117813, Moscow, Russia
Natalia S. Burenkova
Affiliation:
A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences, Vavilova str. 28, 117813, Moscow, Russia
Anastasia A. Gurskaja
Affiliation:
A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences, Vavilova str. 28, 117813, Moscow, Russia
Peter M. Valetsky
Affiliation:
A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences, Vavilova str. 28, 117813, Moscow, Russia
Lyudmila M. Bronstein
Affiliation:
Department of Chemistry, Indiana University, Bloomington, IN 47405, U.S.A.
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Abstract

Highly branched photoluminescent polyphenylenes (PP) containing 1,3,5-triphenylbenzene (TPB) fragments were prepared via combination of cyclocondensation of acetylaromatic compounds and Ni0-catalyzed dehalogenation. Defect free PP with star-like fragments were synthesized using Ni0-catalyzed polymerization of aromatic bromides obtained by modification of 1,3,5-tri(p-bromophenyl)benzene. The molecular weights of the polymers were 6700, 8600, and 15300 Da. The maximum photoluminescence in solution (quantum yield of 96%) was obtained for the highly branched polymer with star-like TPB fragments, bearing no Br or acetyl groups. The PP of this kind show also very bright fluorescence in a solid state under UV irradiation at 360 nm so they can be considered as promising materials for OLED applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 785: Symposium D – Materials and Devices for Smart Systems , 2003 , D10.6
Copyright
Copyright © Materials Research Society 2004

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