Synthesis and Light-Emitting Properties of Novel Red Electrophosphorescent Fluorene-alt-Carbazole Copolymers

Chem. J. Chinese Universities

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Synthesis and Light-Emitting Properties of Novel Red Electrophosphorescent Fluorene-alt-Carbazole Copolymers

YING Lei, CHEN Zhao, JIANG Jia-Xing, GUAN Rong, YANG Wei^*, CAO Yong

Institute of Polymer Optoelectronic Materials and Devices, Key Laboratory of Specical Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, China

Received:2008-06-23 Revised:1900-01-01 Online:2009-02-10 Published:2009-02-10
Contact: YANG Wei

Abstract

Abstract: A novel monomer derived from dibromocarbazole with N-grafted with Ir complex by a long alkyl side chain was synthesized. Based on this new monomer, a series of poly(fluorene-alt-carbazole)s which tethered red light-emitting Ir complex as emitting center were synthesized with Suzuki polycondensation. The polymer light-emitting diodes with structure of ITO/PEDOT∶PSS/PVK/Copolymer/Ba/Al were prepared based on the resulted copolymers. The copolymer PFCzIrNiq-1 exhibits maximal quantum efficiency of 0.23% at 9.4 mA/cm². The peak emission of the resulted copolymers was at 680 nm, which was among the reported deepest iridium containing red-light-emitting electrophosphorescent polymers.

Key words: Fluorene, Carbazole, Ir complex, Copolymer, Red-emission

CLC Number:

O632

TrendMD:

YING Lei, CHEN Zhao, JIANG Jia-Xing, GUAN Rong, YANG Wei^*, CAO Yong. Synthesis and Light-Emitting Properties of Novel Red Electrophosphorescent Fluorene-alt-Carbazole Copolymers[J]. Chem. J. Chinese Universities, doi: .

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Synthesis and Light-Emitting Properties of Novel Red Electrophosphorescent Fluorene-alt-Carbazole Copolymers

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